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By NASA
The TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission will help scientists understand an explosive process called magnetic reconnection and its effects in Earth’s atmosphere. Credit: University of Iowa/Andy Kale NASA will hold a media teleconference at 11 a.m. EDT on Thursday, July 17, to share information about the agency’s upcoming Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites, or TRACERS, mission, which is targeted to launch no earlier than late July.
The TRACERS mission is a pair of twin satellites that will study how Earth’s magnetic shield — the magnetosphere — protects our planet from the supersonic stream of material from the Sun called solar wind. As they fly pole to pole in a Sun-synchronous orbit, the two TRACERS spacecraft will measure how magnetic explosions send these solar wind particles zooming down into Earth’s atmosphere — and how these explosions shape the space weather that impacts our satellites, technology, and astronauts.
Also launching on this flight will be three additional NASA-funded payloads. The Athena EPIC (Economical Payload Integration Cost) SmallSat, led by NASA’s Langley Research Center in Hampton, Virginia, is designed to demonstrate an innovative, configurable way to put remote-sensing instruments into orbit faster and more affordably. The Polylingual Experimental Terminal technology demonstration, managed by the agency’s SCaN (Space Communications and Navigation) program, will showcase new technology that empowers missions to roam between communications networks in space, like cell phones roam between providers on Earth. Finally, the Relativistic Electron Atmospheric Loss (REAL) CubeSat, led by Dartmouth College in Hanover, New Hampshire, will use space as a laboratory to understand how high-energy particles within the bands of radiation that surround Earth are naturally scattered into the atmosphere, aiding the development of methods for removing these damaging particles to better protect satellites and the critical ground systems they support.
Audio of the teleconference will stream live on the agency’s website at:
nasa.gov/live
Participants include:
Joe Westlake, division director, Heliophysics, NASA Headquarters Kory Priestley, principal investigator, Athena EPIC, NASA Langley Greg Heckler, deputy program manager for capability development, SCaN, NASA Headquarters David Miles, principal investigator for TRACERS, University of Iowa Robyn Millan, REAL principal investigator, Dartmouth College To participate in the media teleconference, media must RSVP no later than 10 a.m. on July 17 to Sarah Frazier at: sarah.frazier@nasa.gov. NASA’s media accreditation policy is available online.
The TRACERS mission will launch on a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg Space Force Base in California.
This mission is led by David Miles at the University of Iowa with support from the Southwest Research Institute in San Antonio. NASA’s Heliophysics Explorers Program Office at the agency’s Goddard Space Flight Center in Greenbelt, Maryland, manages the mission for the agency’s HeliophysicsDivision at NASA Headquarters in Washington. The University of Iowa, Southwest Research Institute, University of California, Los Angeles, and University of California, Berkeley, all lead instruments on TRACERS that will study changes in the Earth’s magnetic field and electric field. NASA’s Launch Services Program, based at the agency’s Kennedy Space Center in Florida, manages the Venture-class Acquisition of Dedicated and Rideshare contract.
To learn more about TRACERS, please visit:
nasa.gov/tracers
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Abbey Interrante / Karen Fox
Headquarters, Washington
301-201-0124 / 202-358-1600
abbey.a.interrante@nasa.gov / karen.c.fox@nasa.gov
Sarah Frazier
Goddard Space Flight Center, Greenbelt, Maryland
202-853-7191
sarah.frazier@nasa.gov
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Last Updated Jul 10, 2025 LocationNASA Headquarters Related Terms
Earth Heliophysics Science Mission Directorate Solar Wind TRACERS View the full article
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Space Systems Command set to strengthen operational environment with enhanced global weather sensingBy Space Force
Space Systems Command laid the groundwork for enhanced weather, research, development and prototyping capabilities with the USSF-178 National Security Space Launch Phase 3 Lane 1 task order.
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By NASA
Credit: NASA NASA has awarded a contract to MacLean Engineering & Applied Technologies, LLC of Houston to provide simulation and advanced software services to the agency.
The Simulation and Advanced Software Services II (SASS II) contract includes services from Oct. 1, 2025, through Sept. 30, 2030, with a maximum potential value not to exceed $150 million. The contract is a single award, indefinite-delivery/indefinite-quality contract with the capability to issue cost-plus-fixed-fee task orders and firm-fixed-price task orders.
Under the five-year SASS II contract, the awardee is tasked to provide simulation and software services for space-based vehicle models and robotic manipulator systems; human biomechanical representations for analysis and development of countermeasures devices; guidance, navigation, and control of space-based vehicles for all flight phases; and space-based vehicle on-board computer systems simulations of flight software systems. Responsibilities also include astronomical object surface interaction simulation of space-based vehicles, graphics support for simulation visualization and engineering analysis, and ground-based and onboarding systems to support human-in-the-loop training.
Major subcontractors include Tietronix Software Inc. in Houston and VEDO Systems, LLC, in League City, Texas.
For information about NASA and agency programs, visit:
https://www.nasa.gov/
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Tiernan Doyle
Headquarters, Washington
202-358-1600
tiernan.doyle@nasa.gov
Chelsey Ballarte
Johnson Space Center, Houston
281-483-5111
Chelsey.n.ballarte@nasa.gov
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Last Updated Jul 02, 2025 LocationNASA Headquarters Related Terms
Technology Johnson Space Center View the full article
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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
A digital rendering of the NASA-supported commercial space station, Vast’s Haven-1, which will provide a microgravity environment for crew, research, and in-space manufacturing.Vast NASA-supported commercial space station, Vast’s Haven-1, recently completed a test of a critical air filter system for keeping future astronauts healthy in orbit. Testing confirmed the system can maintain a safe and healthy atmosphere for all planned Haven-1 mission phases.
Testing of the trace contaminant control system was completed at NASA’s Marshall Space Flight Center in Huntsville, Alabama, as part of a reimbursable Space Act Agreement. Vast also holds an unfunded Space Act Agreement with NASA as part of the second Collaborations for Commercial Space Capabilities initiative.
Adrian Johnson, air chemist at NASA’s Marshall Space Flight Center in Huntsville, Alabama, operates the Micro-GC, which is used to measure carbon monoxide levels, during a trace contaminant control system test in the environmental chamber.NASA The subsystem of the environmental control and life support system is comprised of various filters designed to scrub hazardous chemicals produced by both humans and materials on the commercial station. During the test, a representative chemical environment was injected into a sealed environmental chamber, and the filtration system was turned on to verify the trace contaminant control system could maintain a healthy atmosphere.
“Testing of environmental control systems and subsystems is critical to ensure the health and safety of future commercial space station crews,” said Angela Hart, program manager for NASA’s Commercial Low Earth Orbit Development Program at the agency’s Johnson Space Center in Houston. “Through NASA’s agreements with Vast and our other industry partners, the agency is contributing technical expertise, technologies, services, and facilities to support companies in the development of commercial stations while providing NASA important insight into the development and readiness to support future agency needs and services in low Earth orbit.”
NASA-supported commercial space station, Vast’s Haven-1, trace contaminant control filters and support hardware pictured within the environmental chamber at the agency’s Marshall Space Flight Center, Huntsville, Alabama.NASA Experts used the same environmental chamber at Marshall to test the International Space Station environmental control and life support system.
The knowledge and data gained during the recent testing will help validate Vast’s Haven-1 and support future Haven-2 development.
NASA supports the design and development of multiple commercial space stations through funded and unfunded agreements. NASA plans to procure services from one or more companies following the design and development phase as part of the agency’s strategy to become one of many customers for low Earth orbit stations.
For more information about commercial space stations, visit:
www.nasa.gov/commercialspacestations
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By NASA
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
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Last Updated May 21, 2025 Related Terms
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