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3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of Autonomous Tritium Micropowered Sensors concept.NASA/Peter Cabauy Peter Cabauy City Labs, Inc. The NIAC Phase I study confirmed the feasibility of nuclear-micropowered probes (NMPs) using tritium betavoltaic power technology for autonomous exploration of the Moon’s permanently shadowed regions (PSRs). This work advanced the technology’s readiness level (TRL) from TRL 1 to TRL 2, validating theoretical models and feasibility assessments. Phase II will refine the technology, address challenges, and elevate the TRL to 3, with a roadmap for further maturation toward TRL 4 and beyond, supporting NASA’s mission for lunar and planetary exploration. A key innovation is tritium betavoltaic power sources, providing long-duration energy in extreme environments. The proposed 5cm x 5cm gram-scale device supports lunar spectroscopy and other applications. In-situ analyses at the Moon’s south pole are challenging due to cold, limited solar power, and prolonged darkness. Tritium betavoltaics harvest energy from radioactive decay, enabling autonomous sensing in environments unsuitable for conventional photovoltaics and chemical-based batteries. The proposal focuses on designing an ultrathin light weight tritium betavoltaic into an NMP for integrating various scientific instruments. Tritium-powered NMPs support diverse applications, from planetary science to scouting missions for human exploration. This approach enables large-scale deployment for high-resolution remote sensing. For instance, a distributed NMP array could map lunar water resources, aiding Artemis missions. Beyond the Moon, tritium-powered platforms enable a class of missions to Mars, Europa, Enceladus, and asteroids, where alternative power sources are impractical. Phase II objectives focus on improving energy conversion efficiency and resilience of tritium betavoltaic power sources, targeting 1-10 μW continuous electrical power with higher thermal output. The project will optimize NMP integration with sensor platforms, enhancing power management, data transmission, and environmental survivability in PSR conditions. Environmental testing will assess survivability under lunar landing conditions, including decelerations of 27,000-270,000g and interactions with lunar regolith. The goal is to advance TRL from 2 to 3 by demonstrating proof-of-concept prototypes and preparing for TRL 4. Pathways for NASA mission integration will be explored, assessing scalability, applicability, and cost-effectiveness compared to alternative technologies. A key discovery in Phase I was the thermal-survivability benefit of the betavoltaic’s tritium metal hydride, which generates enough heat to keep electronic components operational. This dual functionality–as both a power source and thermal stabilizer–allows NMP components to function within temperature specifications, a breakthrough for autonomous sensing in extreme environments. Beyond lunar applications, this technology could revolutionize planetary science, deep-space exploration, and terrestrial use cases. It could aid Mars missions, where dust storms and long nights challenge solar power, and Europa landers, which need persistent low-power operation. Earth-based applications such as biomedical implants and environmental monitoring could benefit from the proposed advancements in betavoltaic energy storage and micro-scale sensors. The Phase II study supports NASA’s Artemis objectives by enabling sustainable lunar exploration through enhanced resource characterization and autonomous monitoring. Tritium-powered sensing has strategic value for PSR scouting, planetary-surface mapping, and deep-space monitoring. By positioning tritium betavoltaic NMPs as a power solution for extreme environments, this study lays the foundation for transitioning the technology from concept to implementation, advancing space exploration and scientific discovery. 2025 Selections Facebook logo @NASATechnology @NASA_Technology Share Details Last Updated May 27, 2025 EditorLoura Hall Related TermsNIAC StudiesNASA Innovative Advanced Concepts (NIAC) Program Keep Exploring Discover More NIAC Topics Space Technology Mission Directorate NASA Innovative Advanced Concepts NIAC Funded Studies About NIAC View the full article

3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of the Mapping Sub-cm Orbital Debris in LEO concept.NASA/Christine Hartzell Christine Hartzell University of Maryland, College Park The proposed investigation will address key technological challenges associated with a previously funded NIAC Phase I award titled “On-Orbit, Collision-Free Mapping of Small Orbital Debris”. Sub-cm orbital debris in LEO is not detectable or trackable using conventional technologies and poses a major hazard to crewed and un-crewed spacecraft. Orbital debris is a concern to NASA, as well as commercial and DoD satellite providers. In recent years, beginning with our NIAC Phase I award, we have been developing the idea that the sub-cm orbital debris environment may be monitored by detecting the plasma signature of the debris, rather than optical or radar observations of the debris itself. Our prior work has shown that sub-cm orbital debris may produce plasma solitons, which are a type of wave in the ionosphere plasma that do not disperse as readily as traditional waves. Debris may produce solitons that are co-located with the debris (called pinned solitons) or that travel ahead of the debris (called precursor solitons). We have developed computational models to predict the characteristics of the plasma solitons generated by a given piece of debris. These solitons may be detectable by 12U smallsats outfitted with multi-needle Langmuir probes. In this Phase II NIAC award, we will address two key technical challenges that significantly effect the value of soliton-based debris detection: 1. Develop an algorithm to constrain debris size and speed based on observed soliton characteristics. Our prior investigations have produced predictions of soliton characteristics as a function of debris characteristics. However, the inverse problem is not analytically solvable. We will develop machine learning algorithms to address this challenge. 2. Evaluate the feasibility and value of detecting soliton velocity. Multiple observations of the same soliton may allow us to constrain the distance that the soliton has traveled from the debris. When combined with the other characteristics of the soliton and knowledge of the local plasma environment, back propagation of the soliton in plasma simulations may allow us to extract the position and velocity vectors of the debris. If it is possible to determine debris size, position and velocity from soliton observations, this would provide a breakthrough in space situational awareness for debris that is currently undetectable using conventional technology. However, even if only debris size and speed can be inferred from soliton detections, this technology is still a revolutionary improvement on existing methods of characterizing the debris flux, which provide data only on a multi-year cadence. This proposed investigation will answer key technological questions about how much information can be extracted from observed soliton signals and trade mission architectures for complexity and returned data value. Additionally, we will develop a roadmap to continue to advance this technology. 2025 Selections Facebook logo @NASATechnology @NASA_Technology Share Details Last Updated May 27, 2025 EditorLoura Hall Related TermsNIAC StudiesNASA Innovative Advanced Concepts (NIAC) Program Keep Exploring Discover More NIAC Topics Space Technology Mission Directorate NASA Innovative Advanced Concepts NIAC Funded Studies About NIAC View the full article

3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of the Breathing Beyond Earth concept.NASA/Alvaro Romero-Calvo Alvaro Romero-Calvo Georgia Tech Research Corporation The reliable and efficient operation of spacecraft life support systems is challenged in microgravity by the near absence of buoyancy. This impacts the electrolytic production of oxygen and hydrogen from water by forcing the adoption of complex multiphase flow management technologies. Still, water splitting plays an essential role in human spaceflight, closing the regenerative environmental control and life support loop and connecting the water and atmosphere management subsystems. Existing oxygen generation systems, although successful for short-term crewed missions, lack the reliability and efficiency required for long-duration spaceflight and, in particular, for Mars exploration. During our Phase I NIAC effort, we demonstrated the basic feasibility of a novel water-splitting architecture that leverages contactless magnetohydrodynamic (MHD) forces to produce and separate oxygen and hydrogen gas bubbles in microgravity. The system, known as the Magnetohydrodynamic Oxygen Generation Assembly (MOGA), avoids the use of forced water recirculation loops or moving parts such as pumps or centrifuges for phase separation. This fundamental paradigm shift results in multiple operational advantages with respect to the state-of-the-art: increased robustness to over- and under-voltages in the cell stack, minimal risk of electrolyte leaching, wider operational temperature and humidity levels, simpler transient operation, increased material durability, enhanced system stability during dormant periods, modest water purity requirements, reduced microbial growth, and better component-level swap-ability, all of which result in an exceptionally robust system. Overall, these architectural features lead to a 32.9% mass reduction and 20.4% astronaut maintenance time savings with respect to the Oxygen Generation Assembly at the ISS for a four-crew Mars transfer, making the system ideally suited for long-duration missions. In Phase II, we seek to answer some of the key remaining unknowns surrounding this architecture, particularly regarding (i) the long-term electrochemical and multiphase flow behavior of the system in microgravity and its impact on power consumption and liquid interface stability, (ii) the transient operational modes of the MHD drive during start-up, shutdown, and dormancy, and (iii) architectural improvements for manufacturability and ease of repair. Toward that end, we will leverage our combined expertise in microgravity research by partnering with the ZARM Institute in Bremen and the German Aerospace Center to fly, free of charge to NASA, a large-scale magnetohydrodynamic drive system and demonstrate critical processes and components. An external review board composed of industry experts will assess the evolution of the project and inform commercial infusion. This effort will result in a TRL-4 system that will also benefit additional technologies of interest to NASA and the general public, such as water-based SmallSat propulsion and in-situ resource utilization. 2025 Selections Facebook logo @NASATechnology @NASA_Technology Share Details Last Updated May 27, 2025 EditorLoura Hall Related TermsNIAC StudiesNASA Innovative Advanced Concepts (NIAC) Program Keep Exploring Discover More NIAC Topics Space Technology Mission Directorate NASA Innovative Advanced Concepts NIAC Funded Studies About NIAC View the full article

2 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of the TFINER concept.NASA/James Bickford James Bickford Charles Stark Draper Laboratory, Inc. The Thin-Film Nuclear Engine Rocket (TFINER) is a novel space propulsion technology that enables aggressive space exploration for missions that are impossible with existing approaches. The concept uses thin layers of energetic radioisotopes to directly generate thrust. The emission direction of its natural decay products is biased by a substrate to accelerate the spacecraft. A single stage design is very simple and can generate velocity changes of ~100 km/s using a few kilograms of fuel and potentially more than 150 km/s for more advanced architectures. The propulsion system enables a rendezvous with intriguing interstellar objects such as ‘Oumuamua that are on hyperbolic orbits through our solar system. A particular advantage is the ability to maneuver in deep space to find objects with uncertainty in their location. The same capabilities also enable a fast trip to the solar gravitational focus to image multiple potentially habitable exoplanets. Both types of missions require propulsion outside the solar system that is an order of magnitude beyond the performance of existing technology. The phase 2 effort will continue to mature TFINER and the mission design. The program will work towards small scale thruster experiments in the near term. In parallel, isotope production paths that can also be leveraged for other space exploration and medical applications will be pursued. Finally, advanced architectures such as an Oberth solar dive maneuver and hybrid approaches that leverage solar sails near the Sun, will be explored to enhance mission performance. 2025 Selections Facebook logo @NASATechnology @NASA_Technology Share Details Last Updated May 27, 2025 EditorLoura Hall Related TermsNIAC StudiesNASA Innovative Advanced Concepts (NIAC) Program Keep Exploring Discover More NIAC Topics Space Technology Mission Directorate NASA Innovative Advanced Concepts NIAC Funded Studies About NIAC View the full article

2 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of Photophoretic Propulsion Enabling Mesosphere Exploration concept.NASA/Igor Bargatin Igor Bargatin University of Pennsylvania We propose to use the photophoretic levitation and propulsion mechanism to create no-moving-parts flying vehicles that can be used to explore Earth’s upper atmosphere. The photophoretic force arises when a solid is heated relative to the ambient gas through illumination, inducing momentum exchange between the solid and the gas. The force creates lift in structures that absorb light on the bottom yet stay cool on the top, and we engineered our plate mechanical metamaterials to maximize this lift force and payload. The levitation and payload capabilities of our plates typically peak at ambient pressures in the 0.1-1000 Pa range, ideal for applications in Earth’s mesosphere and Mars’s low gravity and thin atmosphere. For example, in the Earth’s mesosphere (i.e., at altitudes from ~50 to ~80 km), the air is too thin for conventional airplanes or balloons but too thick for satellites, such that measurements can be performed for only a few minutes at a time during the short flight of a research rocket. However, the range of ambient pressures in the mesosphere (1-100 Pa) is nearly optimal for our plates’ payload capabilities. Phase 2 of the proposal focuses on the scalable fabrication of Knudsen pump structures that will enable missions with kg-scale payloads in the mesosphere as well as trajectory control with 1 m/s velocity control in existing stratospheric balloon vehicles. 2025 Selections Facebook logo @NASATechnology @NASA_Technology Share Details Last Updated May 27, 2025 EditorLoura Hall Related TermsNASA Innovative Advanced Concepts (NIAC) ProgramNIAC Studies Keep Exploring Discover More NIAC Topics Space Technology Mission Directorate NASA Innovative Advanced Concepts NIAC Funded Studies About NIAC View the full article

3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of MaRS ICICLE concept.NASA/Aaswath Pattabhi Raman Aaswath Pattabhi Raman University of California, Los Angeles Exploration of Mars has captivated the public in recent decades with high-profile robotic missions and the images they have acquired seeding our collective imagination. NASA is actively planning for human exploration of Mars and laid out some of the key capabilities that must be developed to execute successful, cost-effective programs that would put human beings on the surface of another planet and bring them home safely. Efficient, flexible and productive round-trip missions will be key to further human exploration of Mars. New round-trip mission concepts however need substantially improved long-duration storage of cryogenic propellants in various space environments; relevant propellants include liquid Hydrogen (LH2) for high specific impulse Nuclear Thermal Propulsion (NTP) which can be deployed in strategic locations in advance of a mission. If enabled, such LH2 storage tanks could be used to refill a crewed Mars Transfer Vehicle (MTV) to send and bring astronauts home quickly, safely, and cost-effectively. A well-designed cryogenic propellant storage tank can reflect the vast majority of photons incident on the spacecraft, but not all. In thermal environments like Low Earth Orbit (LEO), there is residual heating due to light directly from the Sun, sunlight reflected off Earth, and blackbody thermal radiation from Earth. Over time, this leads to some of the propellant molecules absorbing the requisite latent heat of vaporization, entering the gas phase, and ultimately being released into space to prevent an unsustainable build-up of pressure in the tank. This slow “boil-off” process leads to significant losses of the cryogenic liquid into space, potentially leaving it with insufficient mass and greatly limiting Mars missions. We propose a breakthrough mission concept: an ultra-efficient round-trip Mars mission with zero boil off of propellants. This will be enabled by low-cost, efficient cryogenic liquid storage capable of storing LH2 and LOx with ZBO even in the severe and fluctuating thermal environment of LEO. To enable this capability, the propellant tanks in our mission will employs thin, lightweight, all-solid-state panels attached to the tank’s deep-space-facing surfaces that utilize a long-understood but as-yet-unrealized cooling technology known as Electro-Luminescent Cooling (ELC) to reject heat from cold solid surfaces as non-equilibrium thermal radiation with significantly more power density than Planck’s Law permits for equilibrium thermal radiation. Such a propellant tank would drastically lower the cost and complexity of propulsion systems for crewed Mars missions and other deep space exploration by allowing spacecraft to refill propellant tanks after reaching orbit rather than launching on the much larger rocket required to lift the spacecraft in a single-use stage. To achieve ZBO, a storage spacecraft must keep the storage tank’s temperature below the boiling point of the cryogen (e.g., < 90 K for LOx and < 20 K for liquid H2). Achieving this in LEO-like thermal environments requires both excellent reflectivity toward sunlight and thermal radiation from the Earth, Mars and other nearby bodies as well as a power-efficient cooling mechanism to remove what little heat inevitably does leak in, a pair of conditions ideally suited to the ELC cooling systems that will makes our full return-trip mission to Mars a success. 2025 Selections Facebook logo @NASATechnology @NASA_Technology Share Details Last Updated May 27, 2025 EditorLoura Hall Related TermsNIAC StudiesNASA Innovative Advanced Concepts (NIAC) Program Keep Exploring Discover More NIAC Topics Space Technology Mission Directorate NASA Innovative Advanced Concepts NIAC Funded Studies About NIAC View the full article

2 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of Gravity Poppers: Hopping Probes for the Interior Mapping of Small Solar System Bodies concept.NASA/Benjamin Hockman Benjamin Hockman NASA Jet Propulsion Laboratory The goal of this effort is to develop a robust and affordable mission architecture that enables the gravimetric density reconstruction of small body interiors to unprecedented precision. Our architecture relies on the novel concept of “Gravity Poppers,” which are small, minimalistic probes that are deployed to the surface of a small body and periodically “pop” so as to perpetuate a random hopping motion around the body. By tracking a large swarm of poppers from orbit, a mother spacecraft can precisely estimate their trajectories and continuously refine a high-resolution map of the body’s gravity field, and thus, its internal mass distribution. Hopping probes are also equipped with minimalistic in-situ sensors to measure the surface temperature (when landed) and strength (when bouncing) in order to complement the gravity field and build a more accurate picture of the interior. The Phase I study focused on feasibility assessment of three core technologies that enable such a mission: (1) the mechanical design of hopping probes to be small, simple, robust, and “visible” to a distant spacecraft, (2) the tracking strategy for detecting and estimating the trajectories of a large number of ballistic probes, and (3) the algorithmic framework by which such measurements can be used to iteratively refine a gravity model of the body. The key finding was that the concept is feasible, and demonstrated to have the potential to resolve extremely accurate gravity models, allowing scientists to localize density anomalies such as “weighing” large boulders on the surface. This Phase II Proposal aims to further develop these three core technologies through continued mission trade studies and sensitivity analysis, case studies for simulated missions, and hardware prototypes demonstrating both hopping behavior and tracking performance. 2025 Selections Facebook logo @NASATechnology @NASA_Technology Share Details Last Updated May 27, 2025 EditorLoura Hall Related TermsNIAC StudiesNASA Innovative Advanced Concepts (NIAC) Program Keep Exploring Discover More NIAC Topics Space Technology Mission Directorate NASA Innovative Advanced Concepts NIAC Funded Studies About NIAC View the full article

What do music ensembles and human spaceflight have in common? They require the harmonization of different elements to create an inspiring opus. NASA’s Paige Whittington has experience with both. As a principal flutist for Purdue University’s Wind Ensemble, Whittington helped fellow flutists play beautiful music together while pursuing her graduate degree. Now, as a space exploration simulation architect at Johnson Space Center in Houston, she strives for a cross-team harmony that can inform the agency’s Moon to Mars exploration approach. “Simulation often sits at the intersection of several teams because we integrate various designs and mission requirements,” she said. “We have to learn how to best fit those teams and their priorities together to enable cutting-edge human exploration.” Official NASA portrait of Paige Whittington.NASA/Josh Valcarcel Whittington is part of the NASA Exploration Systems Simulations (NExSyS) team, which develops physics-based simulations to evaluate various vehicles and mission concepts. Her role includes working with lunar and Mars architecture teams within NASA’s Strategy and Architecture Office to assess current and potential future elements of vehicle design, logistics, and planning. “Our simulations help inform engineers, astronauts, and managers about the new, challenging environments that await us on the Moon and Mars,” she said. One of the most challenging and rewarding projects she is working on is the Artemis Distributed Simulation. “NExSyS develops and maintains several individual simulations such as rovers, landers, and habitats. However, human exploration on other planetary bodies requires careful integration and coordination of these individual pieces,” she explained. The distributed simulation brings those pieces together to enable agency teams to envision a complete Artemis mission to the lunar surface. Different elements can be added or removed to create a wide variety of scenarios. The simulation can run automatically with predetermined settings or be responsive to real-time and randomized changes. Participants can operate the team’s video walls, mock-up mission control console, virtual reality platforms, and lander piloting facility to interact together within the chosen Artemis mission scenario. Paige Whittington standing in front of the Video Wall used for human-in-the-loop simulations located inside the Systems Engineering Simulator facility at NASA’s Johnson Space Center. Image courtesy of Paige Whittington “I am very proud to know that the simulations I help develop have impacted some of the decisions being made by NASA’s architecture teams,” she said. She is excited to take on a new responsibility, as well. Whittington recently became project manager of the JSC Engineering Orbital Dynamics software package. Also known as JEOD, this open-source tool was created by NASA to model spacecraft trajectories, such as proposed flight paths for a lunar lander. JEOD calculates gravitational and other environmental forces acting on spacecraft to simulate the position and orientation of those vehicles over time, whether they are orbiting a cosmic body or traveling between planets. Whittington’s family moved frequently during her childhood, calling five different states home as she grew up. Their time in Florida would have a life-long impact. “My parents drove me and my sister across the state to visit NASA’s Kennedy Space Center. It was mesmerizing, awe-inspiring, and seemingly a whole different world from where my 8-year-old self thought I was living,” she said. Her love of space never waned, and a high school physics teacher encouraged her to study aerospace engineering in college. “That was the turning point when I realized space exploration didn’t have to stay in my dreams – it was a career field I could actually work in.” Whittington took her teacher’s advice, earning a bachelor’s degree in aerospace engineering from the University of Texas at Austin. She also completed two internships at Johnson through the Universities Space Research Association and interned with a NASA contractor after graduation. While pursuing a master’s degree in Aeronautics and Astronautics at Purdue, Whittington was accepted to NASA’s Pathways Program and did two rotations with the Simulation and Graphics Branch before joining the team as a full-time employee in June 2022. Paige Whittington celebrating the launch of Artemis I at Johnson Space Center in 2022. Image courtesy of Paige Whittington Whittington has learned several key lessons during her five years with NASA, including the essential part open, regular communication plays in understanding an individual’s or team’s core needs and limitations. She also stressed the importance of adaptability. “The path that you planned for may not be the path you end up choosing. But that planning enabled you to be who you are now and to make different choices,” she said. “I did not anticipate working in simulations when I started my aerospace engineering degree, but I took the opportunity when it was presented, and I am so happy that I did.” Explore More 9 min read Station Nation: Meet Megan Harvey, Utilization Flight Lead and Capsule Communicator Article 6 days ago 4 min read Andrea Harrington’s Vision Paves the Way for Lunar Missions Article 1 week ago 4 min read Aubrie Henspeter: Leading Commercial Lunar Missions Article 2 weeks ago View the full article

Explore This Section Earth Earth Observer Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam More Archives Conference Schedules Style Guide 19 min read Summary of the 2024 SAGE III/ISS Meeting Introduction The Stratospheric Aerosol and Gas Experiment (SAGE) III/International Space Station [SAGEIII/ISS] Science Team Meeting (STM) took place on October 22–23, 2024, in a hybrid format. Approximately 50 scientists attended in person at NASA’s Langley Research Center (LaRC) – see Photo. Participants included researchers from U.S. universities, NASA LaRC, NASA’s Goddard Space Flight Center (GSFC), the NASA/Jet Propulsion Laboratory (JPL), and National Oceanic and Atmospheric Administration (NOAA) laboratories. Speakers from Canada and Germany also attended. The history of the SAGE missions, the development and accomplishments of the SAGE III/ISS mission, and a summary of the 2022 STM appear in a previous article – see “Summary of the SAGE III/ISS Science Team Meeting,” in The Earth Observer, May–June 2023, 35:3, 11–18. This article will summarize the content and key outcomes from the 2024 STM. The full agenda and presentations can be viewed at the SAGE III/ISS website. To access the presentations, use the link provided, then click on the Science Team tab and scroll about halfway down the page to find the 2024 meeting where they are listed. Photo. Group photo of the in-person attendees of the SAGE III/ISS science team meeting, which took place at NASA’s Langley Research Center October 22–23, 2024. Photo Credit: NASA DAY ONE Jun Wang [University of Iowa—SAGE III/ISS Science Team Leader] and David Flittner [LaRC—SAGE III/ISS Project Scientist] kicked off the STM. The pair welcomed all participants and invited Richard Eckman [NASA Headquarters (HQ)—SAGE III/ISS Program Scientist, now emeritus (as of January 1, 2025)] to deliver opening remarks. Allison McMahon [LaRC/Science Systems and Applications, Inc. (SSAI)—SAGE III/ISS Communications Lead] then spoke and provided logistical details for the meeting. The morning sessions focused on project updates and the synergy between SAGE III/ISS and future missions currently in the planning phase, with potential launches in the early 2030s. The afternoon sessions were dedicated to aerosol research and the calibration/validation of SAGE III/ISS data products. Project Operation and Data Product Briefing David Flittner presented an update of the mission status, with over seven years and counting of data collection/analysis/release. SAGE III/ISS went through the 2023 Earth Science Senior Review (see page 15 of linked document for specific summary of the SAGE III/ISS results), and NASA HQ approved the proposal for continued operations for 2024–2026, with partial, overguide (i.e., above baseline request) funding approved to support community validation efforts, e.g., developing online quick look tools – see Figure 1 – and timely algorithm and product improvements. However, some reduction in mission staff and reorganization of work assignments have had to occur to stay within the allotted budget. Overall, Flittner described 2024 as “a year of growth” for many on the SAGE III/ISS Team. He referenced important mission activities planned during the current three-year tenure of the new Science Team cohort. This work includes supporting the 2026 World Meteorological Organization (WMO) International Ozone assessment with a release of improved solar/lunar product in early 2025, examination of product sensitivities to variable aerosol loadings, introduction of a research product with retrieved temperature and pressure profiles, and continuing a much sought-after summer internship program. Figure 1. An example of an enhanced tool for the community to visualize SAGE III/ISS data validation. Figure Credit: Mary Cate McKee [LaRC] Robbie Manion [LaRC] presented version 6.0 (V6) of the SAGE III/ISS data products, which were released in April 2025. Owing to a change in source ozone (O3) cross sections, this version will resolve the longstanding low bias in retrieved aerosol extinction around 600 nm. As a result, some changes in the downstream data products for inferred particle size distribution and aerosol/cloud categorization are expected. In addition, V6 will allow for recovery of hundreds of profiles previously impeded by the recent proliferation of sunspots. Jamie Nehrir [LaRC] stated that SAGE III celebrated its seventh year onboard the ISS on February 19, 2024. [UPDATE: As of this publication, SAGE III/ISS has now passed eight years in orbit.] The payload continues to operate nominally surpassing 70,000 occultation events successfully acquired. Nehrir reported that SAGE III was not affected by the October 9, 2023, external leak from the Russian Nauka (or Multipurpose Laboratory) Module. However, the Disturbance Monitoring Package (DMP) lasers for the y- and z-axes on the instrument have been degrading. The operations team has been in a healthy dialog with the science and processing teams and external partners to determine the potential impact of these degradations on payload performance and on any ISS activities that could affect the science. Invited Presentations on Synergy with New Limb Missions in Formulation Lyatt Jaeglé [University of Washington] presented the mission concept for the Stratosphere Troposphere Response using Infrared Vertically-resolved light Explorer (STRIVE), which was recently selected for a competitive Phase A Concept Study within NASA’s 2023 Earth System Explorers Program (an element of the 2017–2027 Earth Science Decadal Survey). STRIVE fills a critical need for high vertical [1 km (0.6 mi)] resolution profiles of temperature, O3, trace gases, aerosols, and clouds in the upper troposphere–stratosphere (UTS). The system will provide near-global coverage and unparalleled horizontal sampling, producing 400,000 profiles each day. STRIVE will carry two synergistic instruments: a limb-scanning, infrared-imaging Dyson spectrometer to retrieve profiles of temperature, water vapor, trace gas concentrations, aerosol extinction, and cloud properties during day and night; and a dual-spectral, multi-directional, limb-profiling radiometer that retrieves detailed aerosol properties during day. Björn-Martin Sinnhuber [Karlsruhe Institute of Technology, Germany] gave an overview of the Changing-Atmosphere Infrared Tomography Explorer (CAIRT), a candidate mission for the upcoming European Space Agency (ESA) Earth Explorer 11 satellite. If selected, CAIRT would provide passive infrared limb imaging of atmospheric temperature and trace constituents from the upper troposphere at about 5 km (3 mi) altitude up to the lower thermosphere at 115 km (71 mi) altitude. The presentation highlighted how these observations can provide information on how atmospheric gravity waves drive middle atmosphere circulation, age-of-air in the middle atmosphere, the descent of nitrogen oxides (Nox) from the thermosphere into the stratosphere, as well as the detection of sulfur species and sulfate (SO42-) aerosols in the stratosphere. Aerosols Mahesh Mundakkara [LaRC] presented the research used to generate the Global Space-based Stratospheric Aerosol Climatology (GloSSAC) product, a critical resource for analyzing and modeling the climatic effects of stratospheric aerosols. His presentation focused on assessing the Ozone Mapping and Profiler Suite (OMPS) limb profiler (LP) by comparing its data with other datasets, particularly SAGE III/ISS. (NOTE: While OMPS currently flies on the NASA–NOAA Suomi National Polar-orbiting Partnership (Suomi NPP), NOAA-20, and NOAA-21 platforms; LP is only part of OMPS on NOAA–21.) The evaluation aims to identify discrepancies and assess the suitability of OMPS-LP data for integration into the GloSSAC framework. Jianglong Zhang [University of North Dakota] discussed the research plans of a newly funded SAGE project to investigate effective methods for improving stratospheric aerosol analyses and forecasts from aerosol models that can be used for future air quality and visibility forecasts and climate applications. Zhang also presented preliminary comparisons of collocated SAGE aerosol extinction and Cloud Aerosol Transport System (CATS) lidar aerosol extinction values in the stratosphere. [NOTE: CATS operated on ISS from 2015–2017.] Sara Lu [The State University of New York, Albany] discussed efforts to examine smoke aerosol radiative effects in the upper troposphere and lower stratosphere using SAGE III/ISS observations. Lu explained that this project aims to produce multiyear analysis of aerosol radiative effects from all known pyrocumulonimbus cloud (pyroCb) events worldwide over a range of pyroCb intensities and various injection altitudes, geographic locations, and backgrounds. He presented findings from a pyroCb inventory compiled by the Naval Research Lab (NRL). Xi Chen and Jun Wang [both University of Iowa] presented their new project on retrieving aerosol properties using SAGE III/ISS lunar measurements. They noted the challenges in normalizing lunar measurements caused by the Moon’s non-uniform surface. To address this, the team is developing a local normalization method to derive atmospheric transmissions from signals detected within each lunar event, enabling accurate aerosol retrieval. They reported that preliminary results are promising as evidenced by comparison with transmission product from collocated solar events – see Figure 2. This new processing will enrich the spatial and temporal coverage of SAGE III/ISS aerosol product by involving lunar events. Figure 2. Preliminary results of the transmission derived from SAGE III/ISS lunar measurements (y-axis) and its comparison with collocated SAGE III/ISS solar measurements (x-axis). The comparisons are presented in two ways, one for the same wavelength color-coded by altitude [left] and another at the same altitude color-coded for the different wavelengths [right]. The results are for June 2017 through Novembe 2022, and the collocation criteria requires latitude separation smaller than 1˚ and observation times within 10 days. Note that if the transmission at any wavelength or altitude is smaller than 0.005, it is removed from the comparison for quality assurance purpose. Figure Credit: Xi Chen, University of Iowa Adam Pastorek and Peter Bernath [both Old Dominion University] discussed the properties of stratospheric SO42- aerosols from the infrared transmission spectra of Atmospheric Chemistry Experiment (ACE) – flying on the Canadian SCISAT satellite since 2003 – and optical extinction from SAGE III/ISS. Based on ACE infrared measurements, the researchers derived an empirical formula to determine the composition (weight % H2SO4) of volcanic plumes. They combined coincident ACE and SAGE III/ISS measurements, using bimodal, log-normal size distributions to reproduce the observations – see Figure 3. They used ACE observations of sulfur dioxide (SO2) to study the creation and destruction of stratospheric SO42- aerosols. Figure 3. Combined transmittance fitting results from Atmospheric Chemistry Experiment– Fourier Transform Spectrometer (ACE-FTS), and SAGE III/ISS measurements demonstrate an improved characterization of sulfate particle size distribution using bi-lognormal (mode) distributions compared to a single lognormal distribution. The panels on the left show the transmittance fitting [top] and residuals [bottom] for the mono-mode distribution model, while the center panels show the transmittance fitting [top] and residuals [bottom] for the bi-mode distribution. The right panel illustrates the contributions of fine and coarse mode components to the total transmittance. The measurements for this figure were taken approximately four months after the January 2022 Hunga Tonga–Hunga Haʻapai eruption at a tangent height of 23.6 km (14.5 mi) in ACE occultation (ss100628), with coincident SAGE measurements from that same period (2022041609). Figure Credit: Adam Pastorek, adapted from a Figure in a paper published in Journal of Quantitative Spectroscopy and Radiative Transfer in January 2024. Sean Davis [NOAA, Chemistry Science Lab] presented on his research aimed at constraining decadal variability and assessing trends in stratospheric composition and tropospheric circulation using SAGE III/ISS and complementary satellite data sets. The team continues to include the SAGE water vapor and O3 products in the Stratospheric Water and OzOne Satellite Homogenized (SWOOSH) dataset. Davis also highlighted preliminary work evaluating V6 data in comparison to the former V5.3. He discussed line-of-sight, transmission-based filtering for O3 profiles and O3 diurnal variability corrections. Lars Kalnaajs [University of Colorado, Boulder] presented results from two studies of particle size distributions from SAGE aerosol extinction data. Kalnaajs summarized results from two papers in review. His team paired the Optical Particle Counter collected from balloon platforms with SAGE II data to derive the parameters for bi-mode aerosol size distribution. They also presented the work of using SAGE III extinction ratios, 448/756 versus 1544/756, to derive monomodal lognormal size distribution, which allows them to compute distribution moments and compare these to in situ measurements taken over Sweden in the winters of 2002 and 2004. Anne Thompson [GSFC, emeritus] presented on the Southern Hemisphere Additional Ozonesondes (SHADOZ) network and how that SHADOZ data are a satellite validation standard and can also be used to assess ozone trends in the upper troposphere and lower stratosphere. Thompson emphasized that SHADOZ O3 profiles are the only standard process to obtain measurements from surface to mid-stratosphere at 100–150 m (328–492 ft) resolution. Such measurements are essential to validate O3 measurements from SAGE-derived products. She also presented an update on the free tropospheric and lowermost stratospheric (LMS) O3 trends from eight equatorial SHADOZ sites. Newer calculations confirm that an apparent LMS seasonal decline (July–September) is associated with a roughly 100 m (328 ft) upward trend in tropopause height. DAY TWO The second day started with Jack Kaye [NASA Earth Science Division—Associate Director for Research for the Earth Science Division, emeritus as of April 30, 2025] providing a historic perspective on SAGE and comments on its context within NASA’s overall Earth science program. A technical session was held with three invited presentations, followed by three additional sessions where science team members presented their research on trace gas studies, including data product calibration and validation. The meeting concluded with updates from the SAGE project team on the SAGE III/ISS website and ongoing operations aboard the ISS. In his presentation, Kaye shared about his past involvement with the SAGE program and his perspective on its future in the context of flight missions for Earth observations. Invited Presentations on Advanced Modeling and New Satellite Mission For UTS Steven Pawson [GSFC] presented on the comprehensive modeling and analysis capabilities of Upper troposphere and lower stratosphere (UTLS) dynamics and composition in the Goddard Earth Observing System (GEOS) model Pawson discussed the Global Modeling and Assimilation Office’s (GMAO) recent support for the Asian summer monsoon Chemical and CLimate Impact Project (ACCLIP) mission and the trend analysis of stratospheric O3. He also discussed future plans for GMAO, including improving the representation of water vapor in UTS through data assimilation and increasing horizontal and vertical resolution in the GEOS model. Kostas Tsigaridis [Columbia University] presented recent research on the composition and climate impacts of increasing launches to Low Earth Orbit (LEO). Assuming that there are 10,000 launches per year and all launches use liquefied natural gas (LNG) as a propellant, the team compiled launch-related emission inventories and highlighted key uncertainties that could significantly affect climate predictions – particularly the impact black carbon has on the radiative balance and heterogeneous chemistry of the UTS. In addition, water vapor was found to contribute to the heating of the stratosphere and to a nontrivial amount of O3 depletion – 13 Dobson units (DU) on the global mean. Adam Bourassa [University of Saskatchewan, Canada] introduced the satellite mission for High-altitude Aerosol, Water vapor, and Clouds (HAWC), planned as the Canadian contribution to the NASA Atmosphere Observing System (AOS) for launch in 2031 – a key component in NASA’s next generation Earth System Observatory. Bourassa highlighted the three Canadian instruments, which include limb profilers for water vapor and aerosol in the UTS and a far infrared imaging radiometer for ice cloud microphysics and radiative budget closure. He discussed instrument requirements and development progress as well as results from recent sub-orbital testing of prototypes on the NASA Earth Resources (ER)-2 and stratospheric balloons. Trace Gases Brian Soden [University of Miami] presented a new project that will use SAGE data to constrain climate sensitivity in climate models. Climate models differ substantially in their calculation of the radiative forcing from carbon dioxide (CO2), and these intermodel differences have remained largely unchanged for several decades. Soden highlighted the role of stratospheric temperature in modulating the radiative forcing from CO2. He explained that models that simulate a cooler stratosphere simulate a larger radiative forcing for the same change in CO2 compared to models that posit a warmer stratosphere. He added that determining the cause of the model biases in stratospheric temperature – particularly the role of water vapor in driving this intermodel spread – is an area of active research. Ray Wang [Georgia Institute of Technology] compared the uncertainty analysis of SAGE III retrieved O3 and water vapor data in V5.3 to the same parameters in V6.0. He then compared the SAGE III data to the correlative measurements from other platforms. For O3, the differences between SAGE and measurements from the Microwave Limb Sounder (MLS) on NASA’s Aura platform are less than 5% in the stratosphere. SAGE V6.0 ozone values are systematically about 1–2% higher than those from V5.3 O3 – due to changes in how the O3 cross-section is represented in each version. For water vapor, SAGE data agree with MLS and Frost Point Hygrometer (FPH) data within 5%. Wang showed some differences between SAGE water vapor data retrievals using V5.3 and the same data obtained using version 6.0. He also said that a two-dimensional (i.e., spatial and temporal) regression model can be used to minimize sampling bias in climatology derived from non-uniform satellite measurements – ensuring more accurate representation of long-term trends. Emma Knowland [GSFC/Morgan State University, Goddard Earth Sciences Technology and Research II (GESTAR II), now NASA HQ—SAGE III/ISS Program Scientist] discussed the progress of assimilating SAGE III water vapor data product into NASA’s GEOS re-analysis. Her team’s work demonstrated that while the number of solar occultation observations a day from SAGE III/ISS is about 1% of the total number of profiles observed globally by MLS, the chemical timescales of water vapor in the lower stratosphere are long enough that the SAGE III/ISS data can provide a valuable constraint on GEOS re-analysis, especially in the absence of MLS data – see Figure 4. Figure 4. Hovmöller diagrams of the vertical distribution of 15°S–15°N average water vapor anomalies in upper troposphere–stratosphere with water vapor relaxed to a climatology [top left] and from data assimilation of SAGE III/ISS water vapor into the Goddard Earth Observing System (GEOS) model [bottom left]. Scatter plots show water vapor mixing ratios (y-axis) with [top right] and without [bottom right] data assimilation compared independent observations from the Atmospheric Chemistry Experiment – Fourier Transform Spectrometer (ACE-FTS) data (x-axis). The ACE–FTS data were not used in data assimilation. This shows that data assimilation of SAGE data improves the agreement with ACE-FTS – especially in the lower stratosphere (400 to 500 K). Figure Credit: Emma Knowland [NASA] Melody Avery [University of Colorado, Boulder] discussed using SAGE data and data from the Cloud–Aerosol Lidar with Orthogonal Projection (CALIOP) instrument (on the former Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) mission) to study thin clouds and aerosol distributions in the tropical tropopause region (TTL). Avery explained that these distributions from V5.3 of SAGE-III/ISS and V5.41 of CALIOP are shown to agree well, and CALIOP observations of cloud frequency are shown to be a sensitive metric for defining the width of the Hadley Cell near the tropical tropopause. Combining SAGE and CALIOP data produced a longer timescale to constrain and evaluate climate models that currently do not agree on how the tropical width at this altitude varies. They found that results derived using SAGE V6.0 versus V5.3 differ on the order of 2% in the TTL region. Pamela Wales [GESTAR II] introduced a new project that leverages SAGE III/ISS measurements to explore diurnal characteristics of O3 and nitrogen dioxide (NO2) in GEOS model products. Her team is exploring potentially using a GEOS reanalysis of stratospheric trace gases collected by MLS as a transfer standard to evaluate the consistency between the SAGE III/ISS solar and the less frequently measured lunar retrieval. They are also assessing uncertainties in stratospheric NO2 in the GEOS Composition Forecast (GEOS-CF) model using SAGE III/ISS and complementary satellite instruments. This work will inform how effectively GEOS-CF can be used in air quality studies to remove the stratospheric signal from column retrievals of NO2. Luis Millán [JPL] presented work on the change of stratospheric water vapor mass after the Hunga Tonga–Hunga Haʻapai (Hunga) volcano eruption in 2022. Millán found an increase (~10%) of total stratospheric water vapor – a potent greenhouse gas. Given their advanced age, MLS, ACE-FTS, and the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on NASA’s Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics (TIMED) mission (Heliosphere Division), are nearing the end of their missions, leaving SAGE III/ISS as the primary instrument for monitoring the plume’s evolution. Millán discussed how the SAGE III/ISS measurements might be sufficient to observe the dispersion of the excess Hunga water vapor from stratosphere in coming years. He also discussed a 39-year plus record of stratospheric water vapor mass using the overlapping periods between SAGE II, MLS, and SAGE III/ISS. Ryan Stauffer [GSFC] presented the operation and outcomes of the Ticosonde balloon-borne O3 and water vapor sonde project in San Jose, Costa Rica. Ongoing since July 2005, Ticosonde has collected over 700 O3 profiles and 270 water vapor profiles for climate and pollution studies and satellite validation. Because Ticosonde is the only long-term water vapor sonde station in the tropics, the stratospheric water vapor data is vital for validation of SAGE-III/ISS and MLS profiles. Ticosonde has been used to verify the success of updated water vapor retrieval algorithms for both instruments – which now agree within a few percent up to 25 km (15 mi) altitude. Natalya Kramarova [GSFC] showed the comparison of O3 profile retrieved from SAGE III with those derived from the OMPS-LP sensor – which is part of OMPS on NOAA-21 – from February 2023–June 2024. Diurnal corrections using the Goddard Diurnal Ozone Climatology (which is described in a 2020 article in Atmospheric Measurement Techniques) is applied to account for differences in measurement times between SAGE III’s sunrise or sunset observations and NOAA-21 LP’s midday measurements. Once the time correction is made, results show good agreement between the two instruments in depicting vertical ozone distribution across different geographical regions (e.g., tropics and mid-latitudes) and under various conditions (e.g., near the edge of the Antarctic O3 hole in October 2023). The mean biases between NOAA-21 LP and SAGE III are typically within ±5% between ~18–45 km (11–28 mi). Project Team and Operations Highlights Michael Heitz [LaRC] showed that V5.3 and previous versions of the SAGE III/ISS data product had a noticeable – and unphysical – dip in the retrieved aerosol extinction between 520–676 nm. This dip has been referred to as the aerosol “seagull.” However, adoption of a new absorption cross-section database into the V6.0 algorithm reduced the aerosol seagull effect significantly. Kevin Leavor [LaRC] presented new developments for the SAGE III/ISS quick look website. Mary Cate McKee [LaRC] introduced a new feature of the quick look website that showcases comparisons of O3 and water vapor sonde data at over 40 stations. Sonde data is sourced from the Network for the Detection of Atmospheric Composition Change (NDACC), GSFC’s SHADOZ, and the World Ozone and Ultraviolet Radiation Data Centre (WOUDC). Heitz explained that the comparison plots are updated continuously as new coincidences occur, providing the community with valuable insight to the quality of SAGE III/ISS data relative to this external network of ground stations. Future additions to the website include aerosol and lidar comparisons, additional plot statistics, and comparisons with novel homogenized datasets. Returning to a topic discussed in Jamie Nehrir’s presentation, Charles Hill [LaRC] showed that the SAGE III Disturbance Monitoring Package (DMP) correction to the data product – which was implemented beginning with V5.3 – has significantly reduced the product uncertainties caused by ISS vibrations. Approximately 7% of SAGE III occultation events are highly disturbed by mechanical vibrations, and the DMP correction has improved pointing registrations in these events significantly. The DMP’s x-axis gyroscope failed on August 8, 2023 – but this loss did not significantly affect the DMP correction to scan plane elevation. Future possible losses of either the y- or z-axes will end active correction of ISS disturbances. Conclusion Jun Wang, David Flittner, and Richard Eckman led the closing discussion that highlighted the growing interest in atmospheric composition change – particularly due to emissions from large wildfires and volcanic eruptions in recent years. This increasing interest contrasts with the declining availability of observational data from the upper troposphere, following the retirement of CALIPSO in late 2023 and the planned decommissioning of Aura’s aging limb instruments in 2026. This gap underscores the critical importance of SAGE III/ISS data – not only for current UTS research but also for the next 5–7 years, during which no new limb measurements are planned. SAGE III/ISS remains essential for profiling key atmospheric constituents, including water vapor, aerosols, O₃, and NO₂. The long-term, consistent data record provided by the SAGE series of instruments since the late 1970s – including SAGE III/ISS since 2017 – has been invaluable for studying past and future changes in atmospheric composition within the UTS. To further support research and applications of SAGE data products, participants discussed the possibility of proposing a special collection of articles in AGU journals. Overall, the 2024 SAGE III/ISS meeting was a success. Participants received valuable updates on the status of SAGE III/ISS operations, data product calibration and validation, and new developments. The meeting also showcased the collective expertise and excellence in driving advancements in UTS research, from climate change studies to data assimilation for chemistry transport models and contributions to multi-sensor data fusion. Jun Wang University of Iowa jun-wang-1@uiowa.edu David Flittner Langley Research Center david.e.flittner@nasa.gov Richard Eckman NASA Langley Research Center richard.s.eckman@nasa.gov Emma Knowland NASA Headquarters k.e.knowland@nasa.gov Share Details Last Updated May 26, 2025 Related Terms Earth Science View the full article

Credit: NASA NASA has awarded a bridge contract to ASRC Federal System Solutions LLC of Beltsville, Maryland, to provide financial support and project planning and control services to the agency. The Program Analysis and Control Bridge Contract has a total potential value up to $98 million with a 13-month period of performance beginning Saturday, May 24. The contract includes both cost-plus-fixed-fee and indefinite-delivery/indefinite-quantity components. The scope of the work includes business functions such as accounting, scheduling, documentation and configuration management, as well as security compliance. The work will occur at NASA Headquarters in Washington, Goddard Space Flight Center in Greenbelt, Maryland, and Langley Research Center in Hampton, Virginia. For information about NASA and agency programs, visit: https://www.nasa.gov/ Tiernan Doyle Headquarters, Washington 202-358-1600 tiernan.doyle@nasa.gov Jeremy Eggers Goddard Space Flight Center, Greenbelt, Maryland 757-824-2958 jeremy.l.eggers@nasa.gov Share Details Last Updated May 23, 2025 LocationNASA Headquarters Related TermsNASA HeadquartersGoddard Space Flight CenterLangley Research Center View the full article

NASA/Michael DeMocker Just after sunrise, the waning gibbous moon sets just behind a waving United States flag on March 19, 2025, in this image from NASA’s Michoud Assembly Facility in New Orleans. The waning gibbous moon phase comes after the full moon. As the Moon begins its journey back toward the Sun, the opposite side of the Moon now reflects the Moon’s light. The lighted side appears to shrink, but the Moon’s orbit is simply carrying it out of view from our perspective. The Moon also rises later and later each night. Image credit: NASA/Michael DeMocker View the full article

2 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA/Jacob Shaw Capturing the high-stakes work behind NASA’s Airborne Science Program takes more than just technical skill – it takes vision. At NASA’s Armstrong Flight Research Center in Edwards, California, videographer Jacob Shaw brings that vision to life, documenting missions with a style and storytelling approach all his own. “Armstrong is full of cutting-edge flight research and remarkable people,” Shaw said. “Being able to shape how those stories are told, in my own style, is incredibly rewarding.” Armstrong is full of cutting-edge flight research and remarkable people. Being able to shape how those stories are told, in my own style, is incredibly rewarding. jacob Shaw NASA Videographer Shaw recently earned first place in NASA’s 2024 Videographer of the Year Awards, documentation category, for his film, “Reflections,” which chronicles the 2024 Airborne Science mission PACE-PAX – short for Plankton, Aerosol, Cloud, ocean Ecosystem Postlaunch Airborne eXperiment. The campaign used NASA Armstrong’s ER-2 high-altitude aircraft to collect atmospheric and ocean data in support of the PACE satellite, launched in February 2024. “These missions are live, high-stakes operations – even if the crew makes it look effortless,” Shaw said. “I’m fascinated not just with capturing these moments, but with shaping them into meaningful stories through editing.” NASA videographer Jacob Shaw shares a moment with his constant companion during a lunch break in the cafeteria at NASA’s Armstrong Flight Research Center in Edwards, California, on May 21, 2025. Shaw recently earned first place in NASA’s 2024 Videographer of the Year Awards – documentation category – for his film, “Reflections,” which chronicles the 2024 Airborne Science mission PACE-PAX – short for Plankton, Aerosol, Cloud, ocean Ecosystem Postlaunch Airborne eXperiment.NASA/Genaro Vavuris Shaw’s passion for video began early, inspired by watching his father film family memories with a VHS camcorder in the early 1990s. He said seeing those moments captured made him realize the power of documenting reality and inspired him to pursue videography as a professional and personal passion. “What I love most about creating videos for NASA at Armstrong Flight Research Center is the creative freedom I’m given to craft stories,” Shaw said. “I’m trusted to take a concept and run with it.” Since joining the video team in 2021, Shaw has documented dozens of missions, helping to share the center’s groundbreaking work with the world. “We’re a small crew that wears many hats, always stepping up to get the job done,” Shaw said. “I am thankful for their encouragement to submit my work [for this award], and proud to bring home the gold for Armstrong!” NASA videographer Jacob Shaw captures footage of the ER-2 aircraft inside a hangar at NASA’s Armstrong Flight Research Center in Edwards, California, in December 2024. Shaw recently earned first place in NASA’s 2024 Videographer of the Year Awards – documentation category – for his film, “Reflections,” which chronicles the 2024 Airborne Science mission PACE-PAX – short for Plankton, Aerosol, Cloud, ocean Ecosystem Postlaunch Airborne eXperiment.NASA/Genaro Vavuris NASA videographer Jacob Shaw and the video team from NASA’s Armstrong Flight Research Center in Edwards, California, prepare to film the launch of NASA’s SPHEREx mission at Vandenberg Space Force Base. The mission, short for Specto-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer, launched on March 11, 2025, aboard a SpaceX Falcon 9 rocket, continuing NASA’s exploration of the cosmos – and its commitment to visual storytelling.NASA/Jim Ross Share Details Last Updated May 23, 2025 EditorDede DiniusContactDede Diniusdarin.l.dinius@nasa.govLocationArmstrong Flight Research Center Related TermsArmstrong Flight Research CenterPeople of ArmstrongPeople of NASA Explore More 3 min read Winners Announced in NASA’s 2025 Gateways to Blue Skies Competition Article 24 hours ago 5 min read NASA X-59’s Latest Testing Milestone: Simulating Flight from the Ground Article 1 week ago 4 min read Meet the Space Ops Team: Christine Braden Article 1 week ago Keep Exploring Discover More Topics From NASA Armstrong Flight Research Center Aeronautics Humans In Space Universe View the full article

In collaboration with the United States Department of Agriculture, Amazon Web Services, and Colorado State University, NASA turned to students for AI-driven solutions. NASA On March 28, 80 college students filed into Colorado State University’s (CSU) Nancy Richardson Design Center to receive pizza and a challenge: design an intelligent system capable of traversing rugged terrain to provide aid in emergency scenarios. They had 24 hours to complete this mission. Co-led by CSU, the United States Department of Agriculture (USDA) Forest Service, and NASA, the Spring 2025 CSU Hackathon forged a symbiotic relationship between federal agencies looking for novel AI solutions and innovative students hungry for a challenge. “One of the goals of the Career Center is to create opportunities for relationship building,” said Mika Dalton, CSU’s career center employer relations coordinator. “Events like these really help students connect with industry and identify different career pathways to expand their understanding of where their education could lead them after graduation.” In teams of four, students chose between two technical prompts grounded in real-world data. The USDA Forest Service posed the “Uncharted Challenge,” asking teams to develop an autonomous mapping system for uncharted National Forest System roads using high-resolution satellite imagery. In the “Rover Challenge” posed by NASA, students were asked to design an algorithm that could autonomously guide a rover across rough terrain to reach an injured firefighter. Over the next 24 hours, students analyzed lidar and satellite imagery, built algorithms, and tested their models in SageMaker, a development environment hosted by Amazon Web Services (AWS). As they collaborated on their solutions, students also helped NASA evaluate SageMaker’s potential for agency adoption. The students’ work delivered tangible value to both agencies, demonstrating novel approaches to real operational challenges like wildfire response, terrain mapping, and emergency search and rescue. The students did an incredible job showing how AI can solve tough problems, from navigating the Moon to handling emergencies, all in line with NASA’s mission. Martin Garcia NASA’s artificial intelligence and innovation lead For the USDA, accurate and efficient trail maps can support fire crews and forest managers; for NASA, more advanced terrain navigation systems enhance efforts in AI-assisted robotics, including lunar rovers tasked with reaching astronauts or delivering supplies in critical missions. “The students’ consideration for energy efficient lunar vehicle traversal would benefit the agency’s mission to implement extended scientific and engineering missions on the lunar surface,” said NASA data scientist Andrew Wilder. Winning teams received recognition for Best Overall Project, Ingenuity, Simplicity, and Tenacity. Prizes included letters of recommendation from agency leaders and future opportunities to present their work to NASA and Forest Service staff. “I had a great team, and we were able to work through several setbacks with clear communication. I also got to meet professionals from NASA, USDA, Forest Service, and AWS. These were great opportunities and so I learned a lot of networking and interviewing from them,” said one participating CSU student. Ultimately, 98% of post-event student survey respondents indicated a strong enthusiasm to share this event with other students. Along with the endorsement, students shared that it was a great way to learn skills, network, and try something new. Many respondents, while strongly recommending the event, emphasized that the event was very challenging, intense, and a place to apply classroom knowledge. The hackathon demonstrated what’s possible when creativity, passion, and partnership align. For NASA’s Chief AI Officer (CAIO), it offered a clear proof of concept: a low-cost, high-impact model for advancing AI adoption by connecting real-world challenges with emerging talent. Beyond the technical outputs, NASA gained testable solutions, valuable insights into rapid prototyping, and deeper relationships with federal, academic, and industry partners. The hackathon also provided a repeatable framework for future events with other institutions. By bringing together mission teams, partners, and student innovators—and fueling them with pizza and friendly competition—NASA is accelerating innovation in bold, creative ways. Keep Exploring Discover More Topics From NASA NASA STEM Opportunities and Activities For Students For Colleges and Universities Partnering with NASA STEM Engagement About STEM Engagement at NASA View the full article

Explore Hubble Hubble Home Overview About Hubble The History of Hubble Hubble Timeline Why Have a Telescope in Space? Hubble by the Numbers At the Museum FAQs Impact & Benefits Hubble’s Impact & Benefits Science Impacts Cultural Impact Technology Benefits Impact on Human Spaceflight Astro Community Impacts Science Hubble Science Science Themes Science Highlights Science Behind Discoveries Hubble’s Partners in Science Universe Uncovered Explore the Night Sky Observatory Hubble Observatory Hubble Design Mission Operations Missions to Hubble Hubble vs Webb Team Hubble Team Career Aspirations Hubble Astronauts Multimedia Images Videos Sonifications Podcasts e-Books Online Activities 3D Hubble Models Lithographs Fact Sheets Posters Hubble on the NASA App Glossary News Hubble News Social Media Media Resources More 35th Anniversary Online Activities 2 min read Hubble Spies a Spiral So Inclined This NASA/ESA Hubble Space Telescope image features the spiral galaxy NGC 3511. ESA/Hubble & NASA, D. Thilker The stately and inclined spiral galaxy NGC 3511 is the subject of this NASA/ESA Hubble Space Telescope image. The galaxy is located 43 million light-years away in the constellation Crater (The Cup). From Hubble’s vantage point in orbit around Earth, NGC 3511 is tilted by about 70 degrees, intermediate between face-on galaxies that display the full disk of the spiral and its arms, and edge-on galaxies that offer a side view, revealing only their dense, flattened disks. Astronomers are studying NGC 3511 as part of a survey of the star formation cycle in nearby galaxies. For this observing program, Hubble will record the appearance of 55 local galaxies using five filters that allow in different wavelengths, or colors, of light. One of these filters allows only a specific wavelength of red light to pass through. Giant clouds of hydrogen gas glow in this red color when energized by ultraviolet light from hot young stars. As this image shows, NGC 3511 contains many of these bright red gas clouds, some of which are curled around clusters of brilliant blue stars. Hubble will help astronomers catalog and measure the ages of these stars, which are typically less than a few million years old and several times more massive than the Sun. Text Credit: ESA/Hubble Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contact: Claire Andreoli (claire.andreoli@nasa.gov) NASA’s Goddard Space Flight Center, Greenbelt, MD Share Details Last Updated May 23, 2025 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms Hubble Space Telescope Astrophysics Astrophysics Division Galaxies Goddard Space Flight Center Spiral Galaxies The Universe Keep Exploring Discover More Topics From NASA Hubble Space Telescope Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe. Hubble’s Galaxies Galaxy Details and Mergers Hubble’s Night Sky Challenge View the full article

Credit: NASA The United States participated in an international Artemis Accords workshop May 21-22 to advance the safe and responsible exploration of the Moon, Mars, and beyond. Hosted by the United Arab Emirates (UAE), which was represented by the UAE Space Agency, the workshop took place at the Abu Dhabi National Exhibition Centre. The Artemis Accords are a set of non-binding principles signed by nations for a peaceful and prosperous future in space for all of humanity to enjoy. In October 2020, under the first Trump administration, the accords were created, and since then, 54 countries have joined with the United States in committing to transparent and responsible behavior in space. “Following President Trump’s visit to the Middle East, the United States built upon the successful trip through engagement with a global coalition of nations to further implement the accords – practical guidelines for ensuring transparency, peaceful cooperation, and shared prosperity in space exploration,” said acting NASA Administrator Janet Petro. “These accords represent a vital step toward uniting the world in the pursuit of exploration and scientific discovery beyond Earth. NASA is proud to lead in the overall accords effort, advancing the principles as we push the boundaries of human presence in space – for the benefit of all.” Participants from 30 countries joined the discussions and a tabletop exercise centered on defining challenges for operating in a complex environment. As the Artemis Accords workshop concluded Thursday, participants reaffirmed their commitment to upholding the principles outlined in the accords and to continue identifying best practices and guidelines for safe and sustainable exploration. The first workshop was hosted by Poland in 2023, followed by Canada in 2024. Artemis Accords signatories have committed to sharing information about their activities to the United Nations of Committee on the Peaceful Uses of Outer Space and other appropriate channels. Transparency and communication are key to peaceful exploration. The Artemis Accords signatories will gather for face-to-face discussions on the margins of the International Astronautical Congress in late September, where workshop recommendations and outcomes will be presented to the Artemis Accords principals. NASA anticipates additional countries will sign in the coming weeks and months. The Artemis Accords are grounded in the Outer Space Treaty and other agreements, including the Registration Convention and the Rescue and Return Agreement, as well as best practices for responsible behavior that NASA and its partners have supported, including the public release of scientific data. Learn more about the Artemis Accords at: https://www.nasa.gov/artemis-accords Share Details Last Updated May 22, 2025 EditorJessica TaveauLocationNASA Headquarters Related TermsArtemis AccordsOffice of International and Interagency Relations (OIIR) View the full article

NASA astronaut Anne McClain points a camera at herself and takes a “space-selfie” during a May 1, 2025, spacewalk outside the International Space Station. Credit: NASA NASA astronaut and Spokane, Washington, native Anne McClain will participate in an event with students from the Mobius Discovery Center located in her hometown. McClain will answer prerecorded questions submitted by students from aboard the International Space Station. Watch the 20-minute Earth-to-space call on the NASA STEM YouTube Channel. The event will take place at 1:25 p.m. EDT on Tuesday, May 27. Media interested in covering the event must RSVP no later than 5 p.m. EDT on Friday, May 23, to Karen Hudson at 509-321-7125 or via email at: mkhudson@mobiusspokane.org. The Mobius Discovery Center will host the event for elementary, middle, and high school students from various schools across the region, nonprofit organizations, and the Kalispel Tribe. This event is designed to foster imagination among students through exploration of hands-on exhibits and science, technology, engineering, art, and mathematics learning opportunities while inspiring students to consider McClain’s career path. For more than 24 years, astronauts have continuously lived and worked aboard the space station, testing technologies, performing science, and developing skills needed to explore farther from Earth. Astronauts aboard the orbiting laboratory communicate with NASA’s Mission Control Center in Houston 24 hours a day through SCaN’s (Space Communications and Navigation) Near Space Network. Important research and technology investigations taking place aboard the space station benefit people on Earth and lays the groundwork for other agency missions. As part of NASA’s Artemis campaign, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring Artemis Generation explorers, and ensuring the United States continues to lead in space exploration and discovery. See videos of astronauts aboard the space station at: https://www.nasa.gov/stemonstation -end- Gerelle Dodson Headquarters, Washington 202-358-1600 gerelle.q.dodson@nasa.gov Sandra Jones Johnson Space Center, Houston 281-483-5111 sandra.p.jones@nasa.gov Share Details Last Updated May 22, 2025 LocationNASA Headquarters Related TermsHumans in SpaceIn-flight Education DownlinksInternational Space Station (ISS)Johnson Space CenterLearning ResourcesNASA Headquarters View the full article

Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 2 min read Sols 4547-4548: Taking in the View After a Long Drive NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on May 21, 2025 — Sol 4546, or Martian day 4,546 of the Mars Science Laboratory mission — at 05:05:33 UTC. NASA/JPL-Caltech Written by Alex Innanen, Atmospheric Scientist at York University Earth planning date: Wednesday, May 21, 2025 Monday’s single-sol plan included a marathon 45-meter drive (about 148 feet), which put us in position for two full sols of imaging. This means both sols have what we call “targeted” science blocks, in which we have images of the workspace down from the last plan and can carefully choose what we want to take a closer look at. This always means a lot of good discussion amongst the geology and mineralogy theme group (GEO) about what deserves this closer look. As an outsider on the environmental theme group (ENV), I don’t always grasp the complexities of these discussions, but it’s always interesting to see what GEO is up to and to learn new things about the geology of Mount Sharp. GEO ended up picking “Big Bear Lake” as our contact science target, which is getting its typical treatment from APXS and MAHLI, as well as a LIBS observation from ChemCam. Aside from that there was plenty of room for remote sensing. ChemCam is also taking a LIBS observation of “Volcan Mountains” and a long-distance mosaic of the Texoli butte. Mastcam is also taking mosaics of a nearby trough, as well as two depressions known as “Sulphur Spring,” a more distant boxwork structure, and the very distant Mishe Mokwa butte. All of ENV’s activities are remote sensing, and we managed to squeeze in a few of those too. We have a couple dust monitoring observations, looking for dust devils and checking the amount of dust in the atmosphere. And since we’re still in the cloudy season we always try to make room for cloud observations. Today that meant a suraphorizon movie looking for clouds just above the horizon to the south, and a phase function sky survey, which captures clouds all around the rover, to try to understand how these clouds scatter sunlight. Share Details Last Updated May 22, 2025 Related Terms Blogs Explore More 2 min read Sol 4546: Martian Jenga Article 3 hours ago 5 min read Sols 4543-4545: Leaving the Ridge for the Ridges Article 2 days ago 3 min read Sols 4541–4542: Boxwork Structure, or Just “Box-Like” Structure? Article 3 days ago Keep Exploring Discover More Topics From NASA Mars Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited… All Mars Resources Explore this collection of Mars images, videos, resources, PDFs, and toolkits. Discover valuable content designed to inform, educate, and inspire,… Rover Basics Each robotic explorer sent to the Red Planet has its own unique capabilities driven by science. Many attributes of a… Mars Exploration: Science Goals The key to understanding the past, present or future potential for life on Mars can be found in NASA’s four… View the full article

NASA/Joel Kowsky A NASA photographer took this picture of a flower called Borshchov’s tulip near the launch pad at the Baikonur Cosmodrome in Kazakhstan on April 7, 2025, ahead of NASA astronaut Jonny Kim and cosmonauts Sergey Ryzhikov and Alexey Zubritsky launching to the International Space Station. The flower is unique to Kazakhstan, attracting many to study and appreciate its beauty. Image credit: NASA/Joel Kowsky View the full article

5 min read Percolating Clues: NASA Models New Way to Build Planetary Cores NASA’s Perseverance rover was traveling in the channel of an ancient river, Neretva Vallis, when it captured this view of an area of scientific interest nicknamed “Bright Angel” – the light-toned area in the distance at right. The area features light-toned rocky outcrops that may represent either ancient sediment that later filled the channel or possibly much older rock that was subsequently exposed by river erosion. NASA/JPL-Caltech A new NASA study reveals a surprising way planetary cores may have formed—one that could reshape how scientists understand the early evolution of rocky planets like Mars. Conducted by a team of early-career scientists and long-time researchers across the Astromaterials Research and Exploration Science (ARES) Division at NASA’s Johnson Space Center in Houston, the study offers the first direct experimental and geochemical evidence that molten sulfide, rather than metal, could percolate through solid rock and form a core—even before a planet’s silicate mantle begins to melt. For decades, scientists believed that forming a core required large-scale melting of a planetary body, followed by heavy metallic elements sinking to the center. This study introduces a new scenario—especially relevant for planets forming farther from the Sun, where sulfur and oxygen are more abundant than iron. In these volatile-rich environments, sulfur behaves like road salt on an icy street—it lowers the melting point by reacting with metallic iron to form iron-sulfide so that it may migrate and combine into a core. Until now, scientists didn’t know if sulfide could travel through solid rock under realistic planet formation conditions. Working on this project pushed us to be creative. It was exciting to see both data streams converge on the same story. Dr. Jake Setera ARES Scientist with Amentum The study results gave researchers a way to directly observe this process using high-resolution 3D imagery—confirming long-standing models about how core formation can occur through percolation, in which dense liquid sulfide travels through microscopic cracks in solid rock. “We could actually see in full 3D renderings how the sulfide melts were moving through the experimental sample, percolating in cracks between other minerals,” said Dr. Sam Crossley of the University of Arizona in Tucson, who led the project while a postdoctoral fellow with NASA Johnson’s ARES Division. “It confirmed our hypothesis—that in a planetary setting, these dense melts would migrate to the center of a body and form a core, even before the surrounding rock began to melt.” Recreating planetary formation conditions in the lab required not only experimental precision but also close collaboration among early-career scientists across ARES to develop new ways of observing and analyzing the results. The high-temperature experiments were first conducted in the experimental petrology lab, after which the resulting samples—or “run products”—were brought to NASA Johnson’s X-ray computed tomography (XCT) lab for imaging. A molten sulfide network (colored gold) percolates between silicate mineral grains in this cut-out of an XCT rendering—rendered are unmelted silicates in gray and sulfides in white. Credit: Crossley et al. 2025, Nature Communications X-ray scientist and study co-author Dr. Scott Eckley of Amentum at NASA Johnson used XCT to produce high-resolution 3D renderings—revealing melt pockets and flow pathways within the samples in microscopic detail. These visualizations offered insight into the physical behavior of materials during early core formation without destroying the sample. The 3D XCT visualizations initially confirmed that sulfide melts could percolate through solid rock under experimental conditions, but that alone could not confirm whether percolative core formation occurred over 4.5 billion years ago. For that, researchers turned to meteorites. “We took the next step and searched for forensic chemical evidence of sulfide percolation in meteorites,” Crossley said. “By partially melting synthetic sulfides infused with trace platinum-group metals, we were able to reproduce the same unusual chemical patterns found in oxygen-rich meteorites—providing strong evidence that sulfide percolation occurred under those conditions in the early solar system.” To understand the distribution of trace elements, study co-author Dr. Jake Setera, also of Amentum, developed a novel laser ablation technique to accurately measure platinum-group metals, which concentrate in sulfides and metals. “Working on this project pushed us to be creative,” Setera said. “To confirm what the 3D visualizations were showing us, we needed to develop an appropriate laser ablation method that could trace the platinum group-elements in these complex experimental samples. It was exciting to see both data streams converge on the same story.” When paired with Setera’s geochemical analysis, the data provided powerful, independent lines of evidence that molten sulfide had migrated and coalesced within a solid planetary interior. This dual confirmation marked the first direct demonstration of the process in a laboratory setting. Dr. Sam Crossley welds shut the glass tube of the experimental assembly. To prevent reaction with the atmosphere and precisely control oxygen and sulfur content, experiments needed to be sealed in a closed system under vacuum. Credit: Amentum/Dr. Brendan Anzures The study offers a new lens through which to interpret planetary geochemistry. Mars in particular shows signs of early core formation—but the timeline has puzzled scientists for years. The new results suggest that Mars’ core may have formed at an earlier stage, thanks to its sulfur-rich composition—potentially without requiring the full-scale melting that Earth experienced. This could help explain longstanding puzzles in Mars’ geochemical timeline and early differentiation. The results also raise new questions about how scientists date core formation events using radiogenic isotopes, such as hafnium and tungsten. If sulfur and oxygen are more abundant during a planet’s formation, certain elements may behave differently than expected—remaining in the mantle instead of the core and affecting the geochemical “clocks” used to estimate planetary timelines. This research advances our understanding of how planetary interiors can form under different chemical conditions—offering new possibilities for interpreting the evolution of rocky bodies like Mars. By combining experimental petrology, geochemical analysis, and 3D imaging, the team demonstrated how collaborative, multi-method approaches can uncover processes that were once only theoretical. Crossley led the research during his time as a McKay Postdoctoral Fellow—a program that recognizes outstanding early-career scientists within five years of earning their doctorate. Jointly offered by NASA’s ARES Division and the Lunar and Planetary Institute in Houston, the fellowship supports innovative research in astromaterials science, including the origin and evolution of planetary bodies across the solar system. As NASA prepares for future missions to the Moon, Mars, and beyond, understanding how planetary interiors form is more important than ever. Studies like this one help scientists interpret remote data from spacecraft, analyze returned samples, and build better models of how our solar system came to be. For more information on NASA’s ARES division, visit: https://ares.jsc.nasa.gov/ Victoria Segovia NASA’s Johnson Space Center 281-483-5111 victoria.segovia@nasa.gov Share Details Last Updated May 22, 2025 Related Terms Astromaterials Planetary Science Planetary Science Division The Solar System Explore More 6 min read NASA’s Dragonfly Mission Sets Sights on Titan’s Mysteries Article 2 hours ago 4 min read Eclipses, Auroras, and the Spark of Becoming: NASA Inspires Future Scientists Article 1 week ago 6 min read NASA Observes First Visible-light Auroras at Mars Article 1 week ago Keep Exploring Discover More Topics From NASA Planetary Science Stories Astromaterials Latest NASA Science News Solar System View the full article

3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Boeing’s test plane simulates digital taxiing at Moffett Field at NASA’s Ames Research Center in California’s Silicon Valley. NASA/Brandon Torres Navarrete New technology tested by an industry partner at NASA’s Ames Research Center in California’s Silicon Valley could improve how commercial planes taxi to and from gates to runways, making operations safer and more efficient on the surfaces of airports. Airport taxiways are busy. Planes come and go while support vehicles provide maintenance, carry fuel, transport luggage, and more. Pilots must listen carefully to air traffic control when getting directions to the runway – and garbled communications and heavy workloads can cause issues that could lead to runway incursions or collisions. Researchers at Boeing are working to address these issues by digitizing taxiway information and automating aircraft taxi functions. The team traveled to NASA Ames to collaborate with researchers while testing their technology at the Moffett Federal Airfield and NASA’s FutureFlight Central, an air traffic control simulation facility. Doug Christensen, test engineer for Air Traffic Management eXploration (ATM-X) at NASA Ames, and Mike Klein, autonomy technical leader in product development at Boeing discuss the digital taxi test in Ames’s FutureFlight Central facility.NASA/Brandon Torres Navarrete To test these new technologies, Boeing brought a custom single-engine test plane to the airfield. Working from FutureFlight Central, their researchers developed simulated taxiway instructions and deployed them to the test pilot’s digital tablet and the autonomous system. Typically, taxiing requires verbal communication between an air traffic controller and a pilot. Boeing’s digital taxi release system displays visual turn-by-turn routes and directions directly on the pilot’s digital tablet. “This project with Boeing lends credibility to the research being done across Ames,” said Adam Yingling, autonomy researcher for the Air Traffic Management-eXploration (ATM-X) program at NASA Ames. “We have a unique capability with our proximity to Moffett and the work Ames researchers are doing to advance air traffic capabilities and technologies to support the future of our national airspace that opens the door to work alongside commercial operators like Boeing.” The team’s autonomous taxiing tests allowed its aircraft to follow the air traffic control’s digital instructions to transit to the runway without additional pilot inputs. Estela Buchmann, David Shapiro, and Maxim Mounier, members of the NASA Ames ATM-X project team, analyze results of Boeing’s digital taxi test at Ames’s FutureFlight Central facility.NASA/Brandon Torres Navarrete As commercial air travel increases and airspace gets busier, pilots and air traffic controllers have to manage heavier workloads. NASA is working with commercial partners to address those challenges through initiatives like its Air Traffic Management-eXploration project, which aims to transform air traffic management to accommodate new vehicles and air transportation options. “In order to increase the safety and efficiency of our airspace operations, NASA research in collaboration with industry can demonstrate how specific functions can be automated to chart the course for enhancing traffic management on the airport surface,” said Shivanjli Sharma, ATM-X project manager at Ames. Share Details Last Updated May 22, 2025 Related TermsAmes Research CenterAeronauticsAeronautics Research Mission DirectorateAir Traffic Control LabsAir Traffic Management – ExplorationAir Traffic SolutionsDrones & YouFutureFlight Central Explore More 3 min read Winners Announced in NASA’s 2025 Gateways to Blue Skies Competition Article 49 mins ago 5 min read NASA X-59’s Latest Testing Milestone: Simulating Flight from the Ground Article 6 days ago 5 min read NASA Satellite Images Could Provide Early Volcano Warnings Article 7 days ago Keep Exploring Discover More Topics From NASA Missions Humans in Space Climate Change Solar System View the full article

Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 2 min read Sol 4546: Martian Jenga NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on May 19, 2025 — Sol 4544, or Martian day 4,544 of the Mars Science Laboratory mission — at 02:23:29 UTC. NASA/JPL-Caltech Written by Michelle Minitti, Planetary Geologist at Framework Earth planning date: Monday, May 19, 2025 Have you ever played the game Jenga, where you remove one wooden block from a stack, gently place it on another part of the stack, then repeat over and over as you try to keep the stack from toppling over? There are strategies to the game such as what blocks you can afford to remove, and where you can manage to place them without throwing the structure out of balance. That is very much how planning felt today — but instead of wooden blocks, the objects the science team was moving around were science observations in the plan. We had an unusual one-sol plan today so there were very restricted time windows in the plan in which to fit science observations and our next drive. We are driving through an area with criss-crossing fracture sets (which we call boxwork structures) large enough to be seen from orbit. Since they have only recently come within our view, there is no shortage of new observations to make of the fractures as we try to understand the processes that led to their formation. If the fractures were caused by extensive fluid flow through the Martian crust, understanding them would be an important contribution toward tracing the history of Martian water. To fit in all the desired observations — including APXS and MAHLI on a DRT-brushed target, multiple ChemCam RMI and Mastcam mosaics, and a ChemCam LIBS analysis — in addition to environmental monitoring activities and a long drive, the team used every trick in its book to achieve a delicate balancing act of science, time, and power. Some activities were trimmed to fit in smaller time windows, others were moved to less-constrained parts of the plan, and other activities were placed in parallel with each other to take advantage of Curiosity’s ability to multitask. Once our planning Jenga game was over, the team had won — we had a complete and perfectly balanced plan! Who says you cannot teach an old dog (4,546-sols-old) new tricks? Share Details Last Updated May 22, 2025 Related Terms Blogs Explore More 5 min read Sols 4543-4545: Leaving the Ridge for the Ridges Article 2 days ago 3 min read Sols 4541–4542: Boxwork Structure, or Just “Box-Like” Structure? Article 3 days ago 1 min read Sols 4539-4540: Back After a Productive Weekend Plan Article 1 week ago Keep Exploring Discover More Topics From NASA Mars Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited… All Mars Resources Explore this collection of Mars images, videos, resources, PDFs, and toolkits. Discover valuable content designed to inform, educate, and inspire,… Rover Basics Each robotic explorer sent to the Red Planet has its own unique capabilities driven by science. Many attributes of a… Mars Exploration: Science Goals The key to understanding the past, present or future potential for life on Mars can be found in NASA’s four… View the full article

6 min read NASA’s Dragonfly Mission Sets Sights on Titan’s Mysteries When it descends through the thick golden haze on Saturn’s moon Titan, NASA’s Dragonfly rotorcraft will find eerily familiar terrain. Dunes wrap around Titan’s equator. Clouds drift across its skies. Rain drizzles. Rivers flow, forming canyons, lakes and seas. Artist’s concept of NASA’s Dragonfly on the surface of Saturn’s moon Titan. The car-sized rotorcraft will be equipped to characterize the habitability of Titan’s environment, investigate the progression of prebiotic chemistry in an environment where carbon-rich material and liquid water may have mixed for an extended period, and even search for chemical indications of whether water-based or hydrocarbon-based life once existed on Titan. NASA/Johns Hopkins APL/Steve Gribben But not everything is as familiar as it seems. At minus 292 degrees Fahrenheit, the dune sands aren’t silicate grains but organic material. The rivers, lakes and seas hold liquid methane and ethane, not water. Titan is a frigid world laden with organic molecules. Yet Dragonfly, a car-sized rotorcraft set to launch no earlier than 2028, will explore this frigid world to potentially answer one of science’s biggest questions: How did life begin? Seeking answers about life in a place where it likely can’t survive seems odd. But that’s precisely the point. “Dragonfly isn’t a mission to detect life — it’s a mission to investigate the chemistry that came before biology here on Earth,” said Zibi Turtle, principal investigator for Dragonfly and a planetary scientist at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland. “On Titan, we can explore the chemical processes that may have led to life on Earth without life complicating the picture.” On Earth, life has reshaped nearly everything, burying its chemical forebears beneath eons of evolution. Even today’s microbes rely on a slew of reactions to keep squirming. “You need to have gone from simple to complex chemistry before jumping to biology, but we don’t know all the steps,” Turtle said. “Titan allows us to uncover some of them.” Titan is an untouched chemical laboratory where all the ingredients for known life — organics, liquid water and an energy source — have interacted in the past. What Dragonfly uncovers will illuminate a past since erased on Earth and refine our understanding of habitability and whether the chemistry that sparked life here is a universal rule — or a wonderous cosmic fluke. Before NASA’s Cassini-Huygens mission, researchers didn’t know just how rich Titan is in organic molecules. The mission’s data, combined with laboratory experiments, revealed a molecular smorgasbord — ethane, propane, acetylene, acetone, vinyl cyanide, benzene, cyanogen, and more. These molecules fall to the surface, forming thick deposits on Titan’s ice bedrock. Scientists believe life-related chemistry could start there — if given some liquid water, such as from an asteroid impact. Enter Selk crater, a 50-mile-wide impact site. It’s a key Dragonfly destination, not only because it’s covered in organics, but because it may have had liquid water for an extended time. Selk crater, a 50-mile-wide impact site highlighted on this infrared image of Titan, is a key Dragonfly destination. Landing near Selk, Dragonfly will explore various sites, analyzing the surface chemistry to investigate the frozen remains of what could have been prebiotic chemistry in action. NASA/JPL-Caltech/University of Nantes/University of Arizona The impact that formed Selk melted the icy bedrock, creating a temporary pool that could have remained liquid for hundreds to thousands of years under an insulating ice layer, like winter ponds on Earth. If a natural antifreeze like ammonia were mixed in, the pool could have remained unfrozen even longer, blending water with organics and the impactor’s silicon, phosphorus, sulfur and iron to form a primordial soup. “It’s essentially a long-running chemical experiment,” said Sarah Hörst, an atmospheric chemist at Johns Hopkins University and co-investigator on Dragonfly’s science team. “That’s why Titan is exciting. It’s a natural version of our origin-of-life experiments — except it’s been running much longer and on a planetary scale.” For decades, scientists have simulated Earth’s early conditions, mixing water with simple organics to create a “prebiotic soup” and jumpstarting reactions with an electrical shock. The problem is time. Most tests last weeks, maybe months or years. The melt pools at Selk crater, however, possibly lasted tens of thousands of years. Still shorter than the hundreds of millions of years it took life to emerge on Earth, but potentially enough time for critical chemistry to occur. “We don’t know if Earth life took so long because conditions had to stabilize or because the chemistry itself needed time,” Hörst said. “But models show that if you toss Titan’s organics into water, tens of thousands of years is plenty of time for chemistry to happen.” Dragonfly will test that theory. Landing near Selk, it will fly from site to site, analyzing the surface chemistry to investigate the frozen remains of what could have been prebiotic chemistry in action. Morgan Cable, a research scientist at NASA’s Jet Propulsion Laboratory in Southern California and co-investigator on Dragonfly, is particularly excited about the Dragonfly Mass Spectrometer (DraMS) instrument. Developed by NASA’s Goddard Space Flight Center in Greenbelt, Maryland, with a key subsystem provided by the CNES (Centre National d’Etudes Spatiales), DraMS will search for indicators of complex chemistry. “We’re not looking for exact molecules, but patterns that suggest complexity,” Cable said. On Earth, for example, amino acids — fundamental to proteins — appear in specific patterns. A world without life would mainly manufacture the simplest amino acids and form fewer complex ones. Generally, Titan isn’t regarded as habitable; it’s too cold for the chemistry of life as we know it to occur, and there’s is no liquid water on the surface, where the organics and likely energy sources exist. Still, scientists have assumed that if a place has life’s ingredients and enough time, complex chemistry — and eventually life — should emerge. If Titan proves otherwise, it may mean we’ve misunderstood something about life’s start and it may be rarer than we thought. “We won’t know how easy or difficult it is for these chemical steps to occur if we don’t go, so we need to go and look,” Cable said. “That’s the fun thing about going to a world like Titan. We’re like detectives with our magnifying glasses, looking at everything and wondering what this is.” Dragonfly is being designed and built under the direction of the Johns Hopkins Applied Physics Laboratory (APL), which manages the mission for NASA. The team includes key partners at NASA’s Goddard Space Flight Center and NASA’s Jet Propulsion Laboratory. Dragonfly is managed by NASA’s Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate at NASA Headquarters in Washington. For more information on Dragonfly, visit: https://science.nasa.gov/mission/dragonfly/ By Jeremy Rehm Johns Hopkins Applied Physics Laboratory, Laurel, Md. Media Contacts: Karen Fox / Molly Wasser Headquarters, Washington 202-358-1600 karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov Mike Buckley Johns Hopkins Applied Physics Laboratory 443-567-3145 michael.buckley@jhuapl.edu Facebook logo @NASA @NASA Instagram logo @NASA Linkedin logo @NASA Keep Exploring Discover More Topics From NASA Saturn Saturn Moons Our Solar System Asteroids, Comets & Meteors View the full article

3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) A team from South Dakota State University with their project, “Soil Testing and Plant Leaf Extraction Drone,” took first place at the 2025 Gateways to Blue Skies Forum held May 20-21 in Palmdale, California. Advisor Todd Lechter, left, along with team members Nick Wolles, Keegan Visher, Nathan Kuehl and Laura Peterson, and graduate advisor Allea Klauenberg, right, accepted the award.NASA A team from South Dakota State University, with their project titled “Soil Testing and Plant Leaf Extraction Drone” took first place at the 2025 NASA Gateways to Blue Skies Competition, which challenged student teams to research aviation solutions to support U.S. agriculture. The winning project proposed a drone-based soil and tissue sampling process that would automate a typically labor-intensive farming task. The South Dakota State team competed among eight finalists at the 2025 Blue Skies Forum May 20-21 in Palmdale, California, near NASA’s Armstrong Flight Research Center. Subject matter experts from NASA and industry served as judges. “This competition challenges students to think creatively, explore new possibilities, and confront the emerging issues and opportunity spaces solvable through aviation platforms,” said Steven Holz, assistant project manager for University Innovation with NASA’s Aeronautics Research Mission Directorate and Blue Skies judge and co-chair. “They bring imaginative ideas, interesting insights, and an impressive level of dedication. It’s always an honor to work with the next generation of innovators participating in our competition.” This competition challenges students to think creatively, explore new possibilities, and confront the emerging issues and opportunity spaces solvable through aviation platforms Steven holz Assistant Project Manager for University Innovation The winning team members were awarded an opportunity to intern during the 2025-26 academic year at any of four aeronautics-focused NASA centers — Langley Research Center in Hampton, Virginia, Glenn Research Center in Cleveland, Ames Research Center in California’s Silicon Valley, or Armstrong Flight Research Center in Edwards, California. “It’s been super-rewarding for our team to see how far we’ve come, especially with all these other amazing projects that we were competing against,” said Nathan Kuehl, team lead at South Dakota State University. “It wouldn’t have been possible without our graduate advisor, Allea Klauenberg, and advisor, Todd Lechter. We want to thank everybody that made this experience possible.” Other awards included: Second Place — University of Tulsa, CattleLog Cattle Management System Best Technical Paper — Boston University, PLAANT: Precision Land Analysis and Aerial Nitrogen Treatment Sponsored by NASA’s Aeronautics Research Mission Directorate, this year’s competition asked teams of university students to research new or improved aviation solutions to support agriculture that could be applied by 2035 or sooner. The goal of the competition, titled AgAir: Aviation Solutions for Agriculture, was to enhance production, efficiency, sustainability, and resilience to extreme weather. At the forum, finalist teams presented concepts of aviation systems that could help the agriculture industry.Students had the opportunity to meet with NASA and industry experts, tour NASA Armstrong, and gain insight into the agency’s aviation mission. U.S. agriculture provides food, fuel, and fiber to the nation and the world. However, the industry faces significant challenges. NASA Aeronautics is committed to supporting commercial, industrial, and governmental partners in advancing aviation systems to modernize agricultural capabilities. The Gateways to Blue Skies competition is sponsored by NASA’s Aeronautics Research Mission Directorate’s University Innovation Project and is managed by the National Institute of Aerospace. The National Institute of Aerospace has made available a livestream of the competition, as well as information about the finalists and their projects, and details about the 2025 competition. Facebook logo @NASA@NASAaero@NASAes @NASA@NASAaero@NASA_es Instagram logo @NASA@NASAaero@NASA_es Linkedin logo @NASA Explore More 5 min read NASA X-59’s Latest Testing Milestone: Simulating Flight from the Ground Article 6 days ago 4 min read Top Prize Awarded in Lunar Autonomy Challenge to Virtually Map Moon’s Surface Article 7 days ago 5 min read NASA Satellite Images Could Provide Early Volcano Warnings Article 7 days ago Keep Exploring Discover More Topics From NASA Aeronautics Aeronautics STEM Transformative Aeronautics Concepts Program NASA History Share Details Last Updated May 22, 2025 EditorLillian GipsonContactRobert Margettarobert.j.margetta@nasa.gov Related TermsAeronauticsAeronautics Research Mission DirectorateAmes Research CenterArmstrong Flight Research CenterGlenn Research CenterLangley Research CenterTechnology TransferTransformative Aeronautics Concepts ProgramUniversity Innovation View the full article

5 Min Read NASA Knows: What is Lunar Regolith? (Grades 5-8) This article is for students grades 5-8. The surface of the Moon is covered in a thick layer of boulders, rocks, and dust. This dusty, rocky layer is called lunar regolith. It was created a long time ago when meteorites crashed into the Moon and broke up the ground. NASA scientists study the regolith to learn more about the Moon’s history. But the smallest parts of the regolith make exploring the Moon very hard! That is why scientists are working to understand it better and to keep astronauts safe during future lunar missions. What is lunar regolith like? Lunar regolith is full of tiny, sharp pieces that can act like little bits of broken glass. Unlike the dust and soil on Earth, the smallest pieces of regolith have not been worn down by wind or rain. These bits are rough, jagged, and cling to everything they touch – boots, gloves, tools, and even spacecraft! In pictures it might look like soft, harmless gray powder, but it is actually scratchy and can damage lunar landers, spacesuits, and robots. This makes working on the Moon a lot harder than it looks! Is regolith harmful to astronauts? The small parts of lunar regolith get stuck on spacesuits and can be brought inside the spacecraft. Once it is inside, it can cause some serious problems. The tiny, sharp pieces can make astronauts’ skin itchy, irritate their eyes, and even make them cough. If it gets into their lungs, it can make them sick. Scientists worry the damage from breathing in lunar regolith could keep bothering astronauts for a long time, even after they are back on Earth. That is why NASA scientists and technologists are working hard to find smart ways to deal with regolith and protect astronauts! Can regolith damage NASA equipment? Regolith doesn’t just cause trouble for astronauts. It can also damage important machines! It can scratch tools and cover up solar panels, causing them to stop working. It can also clog radiators, which are used to keep machines cool. The small bits of regolith can make surfaces slippery and hard to walk on. It can even make it tough for robots to move around. Unlike Earth’s soil, the Moon’s regolith isn’t packed down. Any time we move things around on the Moon’s surface, we spread the rough, dusty particles around. Can you imagine what a mess launching and landing a spacecraft would make? All of this can make exploring the Moon much more difficult and even dangerous! What is NASA doing to understand lunar regolith? NASA is building many cool technologies to help deal with the harm regolith can cause. One of the tools technologists have already developed is call an Electrodynamic Dust Shield (EDS). It uses electricity to create a kind of force field that pushes the small particles away from tools on the Moon! There are many ways NASA is working to understand lunar regolith. One interesting way is by using special cameras and lasers on landers to watch how the regolith moves when a spacecraft lands. This system is called SCALPPS, which stands for Stereo Cameras for Lunar Plume-Surface Studies. SCALPSS helps scientists see how the lunar regolith gets blown around during landings. It helps scientists to measure the size of the regolith pieces and the amount that flies up into the air during landing. The more NASA knows about how regolith behaves, the better they can plan for safe missions! Career Corner Many types of scientists and engineers work together to understand lunar regolith. If you want to study space, here are some cool jobs you could have! Planetary Geologist: These scientists are like detectives. They study how the things in space were formed, how they have changed, and what they can tell us about the rest of the solar system. Their work helps us understand what is in space. Chemist: Chemists look at space rocks and space dust. They want to know what these materials are made of and how they were created. Astrobiologist: Astrobiologists are studying to find clues of life beyond Earth. They study space to find out if life ever existed – or could exist – somewhere else in the universe. Planetary Scientist: These scientists use pictures, data from spacecraft, and even samples from rocks and dust to learn about other worlds. They explore space without ever leaving Earth! Remote Sensing Scientist: These scientists use satellites, drones, and special cameras to study planets from far away. It is like being a space spy who looks for clues from above. Engineers: Engineers solve problems! Civil engineers, materials engineers, and geotechnical engineers work together to understand how regolith can best be used for building materials and get useful resources on the Moon. Explore More Making Regolith Activity Watch: Mitigating Lunar Dust Watch: NASA SCALPSS Watch: Surprisingly STEM: Exploration Geologist Surprisingly STEM: Moon Rock Processors Explore More For Students Grades 5-8 View the full article

6 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) The SWOT satellite is helping scientists size up flood waves on waterways like the Yellowstone River, pictured here in October 2024 in Montana. SWOT measures the height of surface waters, including the ocean, and hundreds of thousands of rivers, lakes, and reservoirs in the U.S. alone.NPS In a first, researchers from NASA and Virginia Tech used satellite data to measure the height and speed of potentially hazardous flood waves traveling down U.S. rivers. The three waves they tracked were likely caused by extreme rainfall and by a loosened ice jam. While there is currently no database that compiles satellite data on river flood waves, the new study highlights the potential of space-based observations to aid hydrologists and engineers, especially those working in communities along river networks with limited flood control structures such as levees and flood gates. Unlike ocean waves, which are ordinarily driven by wind and tides, and roll to shore at a steady clip, river waves (also called flood or flow waves) are temporary surges stretching tens to hundreds of miles. Typically caused by rainfall or seasonal snowmelt, they are essential to shuttling nutrients and organisms down a river. But they can also pose hazards: Extreme river waves triggered by a prolonged downpour or dam break can produce floods. “Ocean waves are well known from surfing and sailing, but rivers are the arteries of the planet. We want to understand their dynamics,” said Cedric David, a hydrologist at NASA’s Jet Propulsion Laboratory in Southern California and a coauthor of a new study published May 14 in Geophysical Research Letters. SWOT is depicted in orbit in this artist’s concept, with sunlight glinting off one of its solar panels and both antennas of its key instrument — the Ka-band Radar Interferometer (KaRIn) — extended. The antennas collect data along a swath 30 miles (50 kilometers) wide on either side of the satellite.CNES Measuring Speed and Size To search for river waves for her doctoral research, lead author Hana Thurman of Virginia Tech turned to a spacecraft launched in 2022. The SWOT (Surface Water and Ocean Topography) satellite is a collaboration between NASA and the French space agency CNES (Centre National d’Études Spatiales). It is surveying the height of nearly all of Earth’s surface waters, both fresh and salty, using its sensitive Ka-band Radar Interferometer (KaRIn). The instrument maps the elevation and width of water bodies by bouncing microwaves off the surface and timing how long the signal takes to return. “In addition to monitoring total storage of waters in lakes and rivers, we zoom in on dynamics and impacts of water movement and change,” said Nadya Vinogradova Shiffer, SWOT program scientist at NASA Headquarters in Washington. Thurman knew that SWOT has helped scientists track rising sea levels near the coast, spot tsunami slosh, and map the seafloor, but could she identify river height anomalies in the data indicating a wave on the move? She found that the mission had caught three clear examples of river waves, including one that arose abruptly on the Yellowstone River in Montana in April 2023. As the satellite passed overhead, it observed a 9.1-foot-tall (2.8-meter-tall) crest flowing toward the Missouri River in North Dakota. It was divided into a dramatic 6.8-mile-long (11-kilometer-long) peak followed by a more drawn‐out tail. These details are exciting to see from orbit and illustrate the KaRIn instrument’s uniquely high spatial resolution, Thurman said. Sleuthing through optical Sentinel-2 imagery of the area, she determined that the wave likely resulted from an ice jam breaking apart upstream and releasing pent-up water. The other two river waves that Thurman and the team found were triggered by rainfall runoff. One, spotted by SWOT starting on Jan. 25, 2024, on the Colorado River south of Austin, Texas, was associated with the largest flood of the year on that section of river. Measuring over 30 feet (9 meters) tall and 166 miles (267 kilometers) long, it traveled around 3.5 feet (1.07 meters) per second for over 250 miles (400 kilometers) before discharging into Matagorda Bay. The other wave originated on the Ocmulgee River near Macon, Georgia, in March 2024. Measuring over 20 feet (6 meters) tall and extending more than 100 miles (165 kilometers), it traveled about a foot (0.33 meters) per second for more than 124 miles (200 kilometers). “We’re learning more about the shape and speed of flow waves, and how they change along long stretches of river,” Thurman said. “That could help us answer questions like, how fast could a flood get here and is infrastructure at risk?” Complementary Observations Engineers and water managers measuring river waves have long relied on stream gauges, which record water height and estimate discharge at fixed points along a river. In the United States, stream gauge networks are maintained by agencies including the U.S. Geological Survey. They are sparser in other parts of the world. “Satellite data is complementary because it can help fill in the gaps,” said study supervisor George Allen, a hydrologist and remote sensing expert at Virginia Tech. If stream gauges are like toll booths clocking cars as they pass, SWOT is like a traffic helicopter taking snapshots of the highway. The wave speeds that SWOT helped determine were similar to those calculated using gauge data alone, Allen said, showing how the satellite could help monitor waves in river basins without gauges. Knowing where and why river waves develop can help scientists tracking changing flood patterns around the world. Orbiting Earth multiple times each day, SWOT is expected to observe some 55% of large-scale floods at some stage in their life cycle. “If we see something in the data, we can say something,” David said of SWOT’s potential to flag dangerous floods in the making. “For a long time, we’ve stood on the banks of our rivers, but we’ve never seen them like we are now.” More About SWOT The SWOT satellite was jointly developed by NASA and CNES, with contributions from the Canadian Space Agency (CSA) and the UK Space Agency. NASA’s Jet Propulsion Laboratory, managed for the agency by Caltech in Pasadena, California, leads the U.S. component of the project. For the flight system payload, NASA provided the Ka-band radar interferometer (KaRIn) instrument, a GPS science receiver, a laser retroreflector, a two-beam microwave radiometer, and NASA instrument operations. The Doppler Orbitography and Radioposition Integrated by Satellite system, the dual frequency Poseidon altimeter (developed by Thales Alenia Space), the KaRIn radio-frequency subsystem (together with Thales Alenia Space and with support from the UK Space Agency), the satellite platform, and ground operations were provided by CNES. The KaRIn high-power transmitter assembly was provided by CSA. News Media Contacts Jane J. Lee / Andrew Wang Jet Propulsion Laboratory, Pasadena, Calif. 818-354-0307 / 626-379-6874 Written by Sally Younger 2025-074 Share Details Last Updated May 21, 2025 Related TermsSWOT (Surface Water and Ocean Topography)Jet Propulsion Laboratory Explore More 3 min read Devil’s in Details in Selfie Taken by NASA’s Mars Perseverance Rover Article 2 hours ago 5 min read NASA’s Perseverance Mars Rover to Take Bite Out of ‘Krokodillen’ Article 2 days ago 6 min read NASA, French SWOT Satellite Offers Big View of Small Ocean Features Article 6 days ago Keep Exploring Discover Related Topics Missions Humans in Space Climate Change Solar System View the full article