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By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Sunlight reflects off the ocean surface near Norfolk, Virginia, in this 1991 space shuttle image, highlighting swirling patterns created by features such as internal waves, which are produced when the tide moves over underwater features. Data from the international SWOT mission is revealing the role of smaller-scale waves and eddies.NASA The international mission collects two-dimensional views of smaller waves and currents that are bringing into focus the ocean’s role in supporting life on Earth.
Small things matter, at least when it comes to ocean features like waves and eddies. A recent NASA-led analysis using data from the SWOT (Surface Water and Ocean Topography) satellite found that ocean features as small as a mile across potentially have a larger impact on the movement of nutrients and heat in marine ecosystems than previously thought.
Too small to see well with previous satellites but too large to see in their entirety with ship-based instruments, these relatively small ocean features fall into a category known as the submesoscale. The SWOT satellite, a joint effort between NASA and the French space agency CNES (Centre National d’Études Spatiales), can observe these features and is demonstrating just how important they are, driving much of the vertical transport of things like nutrients, carbon, energy, and heat within the ocean. They also influence the exchange of gases and energy between the ocean and atmosphere.
“The role that submesoscale features play in ocean dynamics is what makes them important,” said Matthew Archer, an oceanographer at NASA’s Jet Propulsion Laboratory in Southern California. Some of these features are called out in the animation below, which was created using SWOT sea surface height data.
This animation shows small ocean features — including internal waves and eddies — derived from SWOT observations in the Indian, Atlantic, and Pacific oceans, as well as the Mediterranean Sea. White and lighter blue represent higher ocean surface heights compared to darker blue areas. The purple colors shown in one location represent ocean current speeds.
NASA’s Scientific Visualization Studio “Vertical currents move heat between the atmosphere and ocean, and in submesoscale eddies, can actually bring up heat from the deep ocean to the surface, warming the atmosphere,” added Archer, who is a coauthor on the submesoscale analysis published in April in the journal Nature. Vertical circulation can also bring up nutrients from the deep sea, supplying marine food webs in surface waters like a steady stream of food trucks supplying festivalgoers.
“Not only can we see the surface of the ocean at 10 times the resolution of before, we can also infer how water and materials are moving at depth,” said Nadya Vinogradova Shiffer, SWOT program scientist at NASA Headquarters in Washington.
Fundamental Force
Researchers have known about these smaller eddies, or circular currents, and waves for decades. From space, Apollo astronauts first spotted sunlight glinting off small-scale eddies about 50 years ago. And through the years, satellites have captured images of submesoscale ocean features, providing limited information such as their presence and size. Ship-based sensors or instruments dropped into the ocean have yielded a more detailed view of submesoscale features, but only for relatively small areas of the ocean and for short periods of time.
The SWOT satellite measures the height of water on nearly all of Earth’s surface, including the ocean and freshwater bodies, at least once every 21 days. The satellite gives researchers a multidimensional view of water levels, which they can use to calculate, for instance, the slope of a wave or eddy. This in turn yields information on the amount of pressure, or force, being applied to the water in the feature. From there, researchers can figure out how fast a current is moving, what’s driving it and —combined with other types of information — how much energy, heat, or nutrients those currents are transporting.
“Force is the fundamental quantity driving fluid motion,” said study coauthor Jinbo Wang, an oceanographer at Texas A&M University in College Station. Once that quantity is known, a researcher can better understand how the ocean interacts with the atmosphere, as well as how changes in one affect the other.
Prime Numbers
Not only was SWOT able to spot a submesoscale eddy in an offshoot of the Kuroshio Current — a major current in the western Pacific Ocean that flows past the southeast coast of Japan — but researchers were also able to estimate the speed of the vertical circulation within that eddy. When SWOT observed the feature, the vertical circulation was likely 20 to 45 feet (6 to 14 meters) per day.
This is a comparatively small amount for vertical transport. However, the ability to make those calculations for eddies around the world, made possible by SWOT, will improve researchers’ understanding of how much energy, heat, and nutrients move between surface waters and the deep sea.
Researchers can do similar calculations for such submesoscale features as an internal solitary wave — a wave driven by forces like the tide sloshing over an underwater plateau. The SWOT satellite spotted an internal wave in the Andaman Sea, located in the northeastern part of the Indian Ocean off Myanmar. Archer and colleagues calculated that the energy contained in that solitary wave was at least twice the amount of energy in a typical internal tide in that region.
This kind of information from SWOT helps researchers refine their models of ocean circulation. A lot of ocean models were trained to show large features, like eddies hundreds of miles across, said Lee Fu, SWOT project scientist at JPL and a study coauthor. “Now they have to learn to model these smaller scale features. That’s what SWOT data is helping with.”
Researchers have already started to incorporate SWOT ocean data into some models, including NASA’s ECCO (Estimating the Circulation and Climate of the Ocean). It may take some time until SWOT data is fully a part of models like ECCO. But once it is, the information will help researchers better understand how the ocean ecosystem will react to a changing world.
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. Managed for NASA by Caltech in Pasadena, California, JPL 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.
To learn more about SWOT, visit:
https://swot.jpl.nasa.gov
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Jane J. Lee / Andrew Wang
Jet Propulsion Laboratory, Pasadena, Calif.
626-491-1943 / 626-379-6874
jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov
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Last Updated May 15, 2025 Related Terms
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Christine Braden values new experiences that broaden her perspective; a mindset that has guided her 26-year career at NASA’s Johnson Space Center in Houston, where she currently serves as a senior systems engineer in the Commercial Low Earth Orbit Development Program. In her role, Braden works with engineering teams to develop commercial space stations that will prioritize the safety of astronauts while maximizing cost-effectiveness and the scientific research capabilities onboard.
Managed by NASA’s Space Operations Mission Directorate, the program supports the development of commercially owned and operated space stations in low Earth orbit from which the agency, along with other customers, can purchase services and stimulate the growth of commercial activities in space. Designing and developing these space stations is the first step of NASA’s two-phase approach, enabling the agency to certify stations and procure services as one of many customers.
With a bachelor’s degree in Technical Management from Embry-Riddle Aeronautical University, Braden brings a strong engineering foundation to her work. However, her role unique because it allows her to merge technical expertise with her creative instincts.
“My team must think outside the box to define new ways that ensure that the commercial providers’ technical integrations, requirements, development, and operations are designed to the highest degree possible,” said Braden.
Recently, she proposed a certification and systems engineering architecture that redefines how companies will interface with NASA and each other in an evolving landscape. Braden’s hybrid approach strikes a balance, allowing companies to innovate while favoring shared assurance and accountability. It also gives NASA situational awareness of the companies’ design, tests, mission, and operational approaches. As a result of her efforts, Braden was recognized with an “On the Spot” award.
Christine Braden receives an “On the Spot” award from Angela Hart, program manager for NASA’s Commercial Low Earth Orbit Development Program, in March 2024.NASA/Helen Arase Vargas
Looking ahead, Braden envisions a world where commercial space stations are a hub for science and technology, spacecraft are more efficient, spaceflight is more accessible, humans are back on the Moon, and Mars is the next frontier. In reflecting on these agency-wide goals, Braden finds that working with passionate team members makes her day-to-day work truly special and enjoyable.
“I am a part of a small, close-knit team that works together to make these advancements in space exploration happen for the world,” said Braden. “Working at NASA is a once-in-a-lifetime opportunity that not only defines my working life going forward but also provides me with an experience I can share with some truly amazing people.”
Working at NASA is a once-in-a-lifetime opportunity that not only defines my working life going forward but also provides me with an experience I can share with some truly amazing people.
Christine Braden
Senior Systems Engineer, Commercial Low Earth Orbit Development Program
Outside of work, Braden is inspired by her faith, which encourages her to see things from new perspectives and try to understand people from all walks of life. Additionally, Braden is a lifelong learner who loves listening to podcasts, watching documentaries, and reading web articles. She is eager to learn everything from music and dance to plants and animals.
“When I look through scientific websites where new planets and galaxies are discovered, it makes me think of ways humanity may expand itself to the stars, and ways that we can preserve the life we have here on Earth,” said Braden.
On the topic of preservation, one of Braden’s many hobbies is antique restoration. “It reminds me of my dad and grandfather restoring homes together during my childhood and gives me hope that I can inspire my children as they watch me follow in our family’s footsteps,” said Braden. Her other hobbies include gardening and family activities such as puzzles, board games, watching television, playing video games, hunting, and traveling.
As a driven individual known for her creativity and curiosity, Braden’s fresh ideas and spirit are key in guiding the agency’s progress into new frontiers.
NASA’s Space Operations Mission Directorate maintains a continuous human presence in space for the benefit of people on Earth. The programs within the directorate are the hub of NASA’s space exploration efforts, enabling Artemis, commercial space, science, and other agency missions through communication, launch services, research capabilities, and crew support.
To learn more about NASA’s Space Operation Mission Directorate, visit:
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Last Updated May 15, 2025 Related Terms
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4 min read NASA Enables SPHEREx Data Return Through Commercial Partnership
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By NASA
4 Min Read NASA Expands SPHEREx Science Return Through Commercial Partnership
A sectional rendering of NASA's SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer). Credits: NASA NASA is partnering with commercial industry to expand our knowledge of Earth, our solar system, and beyond. Recently, NASA collaborated with Kongsberg Satellite Services (KSAT) to support data transfer for the agency’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) mission to explore the origins of the universe.
“Not only is NASA moving toward commercialization, the agency is making technological advancements to existing systems and saving millions of dollars in the process — all while expanding human knowledge through science and exploration missions,” said Kevin Coggins, associate administrator for NASA’s SCaN (Space Communications and Navigation) program.
To receive data from missions in space, NASA relies on the Near Space Network and Deep Space Network, a collection of antennas around the globe.
In preparation for the recently-launched SPHEREx observatory, NASA needed to upgrade an antenna on the world’s most remote continent: Antarctica.
Transmitted via NASA’s Near Space Network, this video shows SPHEREx scanning a region of the Large Magellanic Cloud. The shifting colors represent different infrared wavelengths detected by the telescope’s two arrays. Credit: NASA/JPL-Caltech NASA’s SCaN program took a novel approach by leveraging its established commercial partnership with KSAT. While upgraded KSAT antennas were added to the Near Space Network in 2023, SPHEREx required an additional Antarctic antenna that could link to online data storage.
To support SPHEREx’s polar orbit, KSAT upgraded its Troll, Antarctica antenna and incorporated their own cloud storage system. NASA then connected KSAT’s cloud to the NASA cloud, DAPHNE+ (Data Acquisition Process and Handling Environment).
As the Near Space Network’s operational cloud services system, DAPHNE+ enables science missions to transmit their data to the network for virtual file storage, processing, and management.
“By connecting the Troll antenna to DAPHNE+, we eliminated the need for large, undersea fiberoptic cables by virtually connecting private and government-owned cloud systems, reducing the project’s cost and complexity,” said Matt Vincent, the SPHEREx mission manager for the Near Space Network at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
Each day, SPHEREx downlinks a portion of its 20 gigabits of science data through the Troll antenna, which transfers the files across KSAT’s network of relay satellites to the DAPHNE+ cloud. The cloud system combines and centralizes the data from each antenna, allowing access to all of SPHEREx’s health and science data in one convenient place.
The SPHEREx mission data is transmitted from space to the Troll Satellite Station, relayed through a network of satellites, and stored in the Near Space Network’s cloud system for easily-accessible analysis by scientists around the world.NASA/Dave Ryan With coverage throughout its orbit, SPHEREx transmits its 3D maps of the celestial sky, offering new insight into what happened a fraction of a second after the big bang.
“Missions like SPHEREx use the Near Space Network’s combination of commercial and government antennas,” explained Michael Skube, DAPHNE+ manager at NASA Goddard. “And that is the benefit of DAPHNE+ — it enables the network to pull different sources of information into one central location. The DAPHNE+ system treats government and commercial antennas as part of the same network.”
The partnership is mutually beneficial. NASA’s Near Space Network maintains a data connection with SPHEREx as it traverses both poles and KSAT benefits from its antennas’ integration into a robust global network – no new cables required.
“We were able to find a networking solution with KSAT that did not require us to put additional hardware in Antarctica,” said Vincent. “Now we are operating with the highest data rate we have ever downlinked from that location.”
The upgraded ground station antenna at Troll Satellite Station supports cloud-based space communications, enabling NASA’s Near Space Network to support scientific missions via a wireless cloud network.Kongsberg Satellite Services For NASA, its commercial partners, and other global space agencies, this expansion means more reliable space communications with fewer expenses.
Troll’s successful integration into the Near Space Network is a case study for future private and government partnerships. As SPHEREx measures the collective glow of over 450 million galaxies as far as 10 billion light-years away, SCaN continues to innovate how its discoveries safely return to Earth.
The SPHEREx mission is managed by NASA’s Jet Propulsion Laboratory in Southern California for the agency’s Astrophysics Division within the Science Mission Directorate at NASA Headquarters. Data will be processed and archived at IPAC at Caltech. The SPHEREx dataset will be publicly available at the NASA-IPAC Infrared Science Archive. Funding and oversight for DAPHNE+ and the Near Space Network come from the SCaN program office at NASA Headquarters and operate out of NASA’s Goddard Space Flight Center. The Troll Satellite Station is owned and operated by Kongsberg Satellite Services and located in Queen Maud Land, Antarctica.
About the Author
Korine Powers
Lead Writer and Communications StrategistKorine Powers, Ph.D. is a writer for NASA's Space Communications and Navigation (SCaN) program office and covers emerging technologies, commercialization efforts, exploration activities, and more.
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Last Updated May 06, 2025 Related Terms
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By NASA
8 Min Read How to Contribute to Citizen Science with NASA
A number of NASA projects use mobile phone apps to put satellite data into the palm of your hand, and allow intrepid citizen scientists to upload data. Credits:
NASA A cell phone, a computer—and your curiosity—is all you need to become a NASA citizen scientist and contribute to projects about Earth, the solar system, and beyond.
Science is built from small grains of sand, and you can contribute yours from any corner of the world.
All you need is a cell phone or a computer with an internet connection to begin a scientific adventure. Can you imagine making a pioneering discovery in the cosmos? Want to help solve problems that could improve life on our planet? Or maybe you dream of helping solve an ancient mystery of the universe? All of this is possible through NASA’s Citizen Science program.
NASA defines citizen science, or participatory science, as “science projects that rely on volunteers,” said Dr. Marc Kuchner, an astrophysicist and the Citizen Science Officer in the agency’s Science Mission Directorate in Washington, D.C.
For decades, volunteers have been supporting NASA researchers in different fields and in a variety of ways, depending on the project. They help by taking measurements, sorting data from NASA missions, and deepening our understanding of the universe and our home planet. It all counts.
“That’s science for you: It’s collaborative,” said Kuchner, who oversees the more than 30 citizen science projects NASA offers. “I connect the public and scientists to get more NASA science done.”
NASA astrophysicist Marc Kuchner is a pioneer in participatory science and today serves as NASA’s Citizen Science program officer. In 2014, Kuchner created the Disk Detective project, which helps NASA scientists study how planets form. Kuchner has also been the principal investigator for some of the agency’s many citizen science projects, but today he oversees the portfolio and promotes volunteer participation around the world.
Credit: David Friedlander A menu of projects for all tastes
Citizen scientists can come from anywhere in the world—they do not have to be U.S. citizens or residents. Volunteers help NASA look for planets in other solar systems, called exoplanets; sort clouds in Earth’s sky; observe solar eclipses; or detect comets and asteroids. Some of those space rocks are even named after the volunteers who helped find them.
Mass participation is key in initiatives that require as many human eyes as possible. “There are science projects that you can’t do without the help of a big team,” Kuchner said. For example, projects that need large datasets from space telescopes—or “things that are physically big and you need people in different places looking from different angles,” he said.
One example is Aurorasaurus, which invites people to observe and classify northern and southern auroras. “We try to study them with satellites, but it really helps to have people on the ground taking photos from different places at different times,” he explained.
“Part of the way we serve our country and humankind is by sharing not just the pretty pictures from our satellites, but the entire experience of doing science,” Kuchner said.
More than 3 million people have participated in the program. Kuchner believes that shows how much people want to be part of what he calls the “roller coaster” of science. “They want to go on that adventure with us, and we are thrilled to have them.”
The dream of discovering
“You can help scientists who are now at NASA and other organizations around the world to discover interesting things,” said Faber Burgos, a citizen scientist and science communicator from Colombia. “Truth be told, I’ve always dreamed of making history.”
Colombian citizen scientist Faber Burgos studied Modern Languages at the Colombian School of Industrial Careers and has a university degree in Classical Archaeology. Today, he is dedicated to disseminating science content through his social media accounts, focusing on children. In 2020, he and his team launched a balloon probe into the stratosphere with a camera that captured the curvature of the Earth, with the aim of demonstrating that the Earth is round. The video of that feat exceeds 97 million views on his Facebook account, earning him a Guinness World Record.
Credit: Courtesy of Faber Burgos Burgos has been involved in two projects for the past four years: the International Astronomical Search Collaboration (IASC), which searches the sky for potentially dangerous asteroids, and Backyard Worlds: Planet 9. This project uses data from NASA’s now-completed Wide-field Infrared Survey Explorer (WISE) and its follow-up mission, NEOWISE, to search for brown dwarfs and a hypothetical ninth planet.
“There are really amazing participants in this project,” said Kuchner, who helped launch it in 2015. NASA’s WISE and NEOWISE missions detected about 2 billion sources in the sky. “So, the question is: Among those many sources, are any of them new unknowns?” he said.
The project has already found more than 4,000 brown dwarfs. These are Jupiter-sized objects—balls of gas that are too big to be planets, but too small to be stars. Volunteers have even helped discover a new type of brown dwarf.
Participants in the project are also hopeful they’ll find a hypothetical ninth planet, possibly Neptune-sized, in an orbit far beyond Pluto.
The Backyard Worlds: Planet 9 citizen science project asks volunteers to help search for new objects at the edge of our solar system. The assignment is to review images from NASA’s past WISE and NEOWISE missions in search of two types of astronomical objects: brown dwarfs(balls of gas the same size as Jupiter that have too little mass to be considered stars) and low-mass stars. Or, even, the hypothetical ninth planet of our Sun, known as Planet nine, or Planet X. The image shows an artist’s rendering of such a hypothetical world orbiting far from the Sun.
Credit: Caltech/R. Hurt (IPAC) Caltech/R. Hurt (IPAC) Burgos explained that analyzing the images is easy. “If it’s a moving object, it’s obviously going to be something of interest,” he said. “Usually, when you see these images, everything is still. But if there’s an object moving, you have to keep an eye on it.”
Once a citizen scientist marks the object across the full image sequence, they send the information to NASA scientists to evaluate.
“As a citizen scientist, I’m happy to do my bit and, hopefully, one day discover something very interesting,” he said. “That’s the beauty of NASA—it invites everyone to be a scientist. Here, it doesn’t matter what you are, but your desire to learn.”
The first step
To become a NASA citizen scientist, start by visiting the program’s website. There you’ll find a complete list of available projects with links to their respective sites. Some are available in Spanish and other languages. Many projects are also hosted on the Zooniverse platform, which has been available since 2006.
“Another cool way to get involved is to come to one of our live events,” said Kuchner. These are virtual events open to the public, where NASA scientists present their projects and invite people to participate. “Pick a project you like—and if it’s not fun, pick a different one,” he advised. “There are wonderful relationships to be had if you reach out to scientists and other participants.”
Another way for people to get involved in citizen science is to participate in the annual NASA International Space Apps Challenge, the largest global hackathon. This two-day event creates innovation through international collaboration, providing an opportunity for participants to use NASA’s free and open data and agency partners’ space-based data to tackle real-world problems on Earth and in space. The next NASA International Space Apps Challenge will be October 4-5, 2025.
Credit: NASA Age is not the limit
People of all ages can be citizen scientists. Some projects are kid-friendly, such as Nemo-Net, an iPad game that invites participants to color coral reefs to help sort them. “I’d like to encourage young people to start there—or try a project with one of the older people in their life,” Kuchner said.
Citizen science can also take place in classrooms. In the Growing Beyond Earth project, teachers and students run experiments on how to grow plants in space for future missions. The IASC project also works with high schools to help students detect asteroids.
A student waters small plants inside a Growing Beyond Earth citizen science project grow box.
Credit: NASA Projects by the community, for the community
GLOBE Observer is another initiative with an international network of teachers and students. The platform offers a range of projects—many in Spanish—that invite people to collect data using their cell phones.
One of the most popular is the GLOBE Mosquito Habitat Mapper, which tracks the migration and spread of mosquitoes that carry diseases. “It’s a way to help save lives—tracking the vectors that transmit malaria and Zika, among others,” Kuchner said.
Other GLOBE projects explore everything from ground cover to cloud types. Some use astronomical phenomena visible to everyone. For example, during the 2024 total solar eclipse, participants measured air temperature using their phones and shared that data with NASA scientists.
The full experience of doing science
No prior studies are needed, but many volunteers go on to collaborate on—or even lead—scientific research. More than 500 NASA citizen scientists have co-authored scientific publications.
One of them is Hugo Durantini Luca, from Córdoba, Argentina, who has participated in 17 published articles, with more on the way. For years, he explored various science projects, looking for one where he could contribute more actively.
Durantini Luca participated in one of NASA’s first citizen science projects, launched in 2006: Stardust at home. Still ongoing, this project invites volunteers to participate in the search for evidence of interstellar dust on the aerogel and aluminum foil collectors returned by NASA’s Stardust mission, using an online virtual microscope.
Credit: NASA He participated in NASA’s first citizen science project, Stardust@home, which invites users to search for interstellar dust particles in collectors from the Stardust mission, using a virtual microscope.
In 2014, he discovered Disk Detective, a project that searches for disks around stars, where planets may form. By looking at images from the WISE and NEOWISE missions, participants can help understand how worlds are born and how solar systems evolve.
“And, incidentally, if we find planets or some sign of life, all the better,” said Durantini Luca.
Although that remains a dream, they have made other discoveries—like a new kind of stellar disk called the “Peter Pan Disk,” which appears young even though the star it surrounds is not.
Durantini Luca participated in one of NASA’s first citizen science projects, launched in 2006: Stardust at home. Still ongoing, this project invites volunteers to participate in the search for evidence of interstellar dust on the aerogel and aluminum foil collectors returned by NASA’s Stardust mission, using an online virtual microscope.
Credit: NASA Science in person
In 2016, Durantini Luca got the chance to support Disk Detective with his own observations from the southern hemisphere. He traveled to El Leoncito Astronomical Complex (CASLEO), an observatory in San Juan, Argentina. There, he learned to use a spectrograph—an instrument that breaks down starlight to analyze its composition.
He treasures that experience. “Curiously, it was the first time in my life I used a telescope,” he said.
In 2016, citizen scientist Hugo Durantini Luca traveled for 18 hours to the El Leoncito Astronomical Complex (CASLEO), at the foot of the Andes Mountains. From there, he made observations of a candidate star of the Disk Detective project.
Credit: Luciano García While in-person opportunities are rare, both virtual and physical events help build community. Citizen scientists stay in touch weekly through various channels.
“Several of us are friends already—after so many years of bad jokes on calls,” said Durantini Luca.
“People send me pictures of how they met,” said Kuchner. He said the program has even changed how he does science. “It’s changed my life,” he said. “Science is already cool—and this makes it even cooler.”
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Last Updated Apr 29, 2025 Related Terms
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
JunoCam, the visible light imager aboard NASA’s Juno, captured this enhanced-color view of Ju-piter’s northern high latitudes from an altitude of about 36,000 miles (58,000 kilometers) above the giant planet’s cloud tops during the spacecraft’s 69th flyby on Jan. 28, 2025. Image data: NASA/JPL-Caltech/SwRI/MSSS Image processing: Jackie Branc (CC BY) New data from the agency’s Jovian orbiter sheds light on the fierce winds and cyclones of the gas giant’s northern reaches and volcanic action on its fiery moon.
NASA’s Juno mission has gathered new findings after peering below Jupiter’s cloud-covered atmosphere and the surface of its fiery moon, Io. Not only has the data helped develop a new model to better understand the fast-moving jet stream that encircles Jupiter’s cyclone-festooned north pole, it’s also revealed for the first time the subsurface temperature profile of Io, providing insights into the moon’s inner structure and volcanic activity.
Team members presented the findings during a news briefing in Vienna on Tuesday, April 29, at the European Geosciences Union General Assembly.
“Everything about Jupiter is extreme. The planet is home to gigantic polar cyclones bigger than Australia, fierce jet streams, the most volcanic body in our solar system, the most powerful aurora, and the harshest radiation belts,” said Scott Bolton, principal investigator of Juno at the Southwest Research Institute in San Antonio. “As Juno’s orbit takes us to new regions of Jupiter’s complex system, we’re getting a closer look at the immensity of energy this gas giant wields.”
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Made with data from the JIRAM instrument aboard NASA’s Juno, this animation shows the south polar region of Jupiter’s moon Io during a Dec. 27, 2024, flyby. The bright spots are locations with higher temperatures caused by volcanic activity; the gray areas resulted when Io left the field of view.NASA/JPL/SwRI/ASI – JIRAM Team (A.M.) Lunar Radiator
While Juno’s microwave radiometer (MWR) was designed to peer beneath Jupiter’s cloud tops, the team has also trained the instrument on Io, combining its data with Jovian Infrared Auroral Mapper (JIRAM) data for deeper insights.
“The Juno science team loves to combine very different datasets from very different instruments and see what we can learn,” said Shannon Brown, a Juno scientist at NASA’s Jet Propulsion Laboratory in Southern California. “When we incorporated the MWR data with JIRAM’s infrared imagery, we were surprised by what we saw: evidence of still-warm magma that hasn’t yet solidified below Io’s cooled crust. At every latitude and longitude, there were cooling lava flows.”
The data suggests that about 10% of the moon’s surface has these remnants of slowly cooling lava just below the surface. The result may help provide insight into how the moon renews its surface so quickly as well as how as well as how heat moves from its deep interior to the surface.
“Io’s volcanos, lava fields, and subterranean lava flows act like a car radiator,” said Brown, “efficiently moving heat from the interior to the surface, cooling itself down in the vacuum of space.”
Looking at JIRAM data alone, the team also determined that the most energetic eruption in Io’s history (first identified by the infrared imager during Juno’s Dec. 27, 2024, Io flyby) was still spewing lava and ash as recently as March 2. Juno mission scientists believe it remains active today and expect more observations on May 6, when the solar-powered spacecraft flies by the fiery moon at a distance of about 55,300 miles (89,000 kilometers).
This composite image, derived from data collected in 2017 by the JIRAM instrument aboard NASA’s Juno, shows the central cyclone at Jupiter’s north pole and the eight cy-clones that encircle it. Data from the mission indicates these storms are enduring fea-tures.NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM Colder Climes
On its 53rd orbit (Feb 18, 2023), Juno began radio occultation experiments to explore the gas giant’s atmospheric temperature structure. With this technique, a radio signal is transmitted from Earth to Juno and back, passing through Jupiter’s atmosphere on both legs of the journey. As the planet’s atmospheric layers bend the radio waves, scientists can precisely measure the effects of this refraction to derive detailed information about the temperature and density of the atmosphere.
So far, Juno has completed 26 radio occultation soundings. Among the most compelling discoveries: the first-ever temperature measurement of Jupiter’s north polar stratospheric cap reveals the region is about 11 degrees Celsius cooler than its surroundings and is encircled by winds exceeding 100 mph (161 kph).
Polar Cyclones
The team’s recent findings also focus on the cyclones that haunt Jupiter’s north. Years of data from the JunoCam visible light imager and JIRAM have allowed Juno scientists to observe the long-term movement of Jupiter’s massive northern polar cyclone and the eight cyclones that encircle it. Unlike hurricanes on Earth, which typically occur in isolation and at lower latitudes, Jupiter’s are confined to the polar region.
By tracking the cyclones’ movements across multiple orbits, the scientists observed that each storm gradually drifts toward the pole due to a process called “beta drift” (the interaction between the Coriolis force and the cyclone’s circular wind pattern). This is similar to how hurricanes on our planet migrate, but Earthly cyclones break up before reaching the pole due to the lack of warm, moist air needed to fuel them, as well as the weakening of the Coriolis force near the poles. What’s more, Jupiter’s cyclones cluster together while approaching the pole, and their motion slows as they begin interacting with neighboring cyclones.
“These competing forces result in the cyclones ‘bouncing’ off one another in a manner reminiscent of springs in a mechanical system,” said Yohai Kaspi, a Juno co-investigator from the Weizmann Institute of Science in Israel. “This interaction not only stabilizes the entire configuration, but also causes the cyclones to oscillate around their central positions, as they slowly drift westward, clockwise, around the pole.”
The new atmospheric model helps explain the motion of cyclones not only on Jupiter, but potentially on other planets, including Earth.
“One of the great things about Juno is its orbit is ever-changing, which means we get a new vantage point each time as we perform a science flyby,” said Bolton. “In the extended mission, that means we’re continuing to go where no spacecraft has gone before, including spending more time in the strongest planetary radiation belts in the solar system. It’s a little scary, but we’ve built Juno like a tank and are learning more about this intense environment each time we go through it.”
More About Juno
NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Juno mission for the principal investigator, Scott Bolton, of the Southwest Research Institute in San Antonio. Juno is part of NASA’s New Frontiers Program, which is managed at NASA’s Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate in Washington. The Italian Space Agency funded the Jovian InfraRed Auroral Mapper. Lockheed Martin Space in Denver built and operates the spacecraft. Various other institutions around the U.S. provided several of the other scientific instruments on Juno.
More information about Juno is at: https://www.nasa.gov/juno
News Media Contacts
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
Deb Schmid
Southwest Research Institute, San Antonio
210-522-2254
dschmid@swri.org
2025-062
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Last Updated Apr 29, 2025 Related Terms
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