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By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
At left is NASA’s Perseverance Mars rover, with a circle indicating the location of the calibration target for the rover’s SHERLOC instrument. At right is a close-up of the calibration target. Along the bottom row are five swatches of spacesuit materials that scientists are studying as they de-grade.NASA/JPL-Caltech/MSSS The rover carries several swatches of spacesuit materials, and scientists are assessing how they’ve held up after four years on the Red Planet.
NASA’s Perseverance rover landed on Mars in 2021 to search for signs of ancient microbial life and to help scientists understand the planet’s climate and geography. But another key objective is to pave the way for human exploration of Mars, and as part of that effort, the rover carries a set of five spacesuit material samples. Now, after those samples have endured four years of exposure on Mars’ dusty, radiation-soaked surface, scientists are beginning the next phase of studying them.
The end goal is to predict accurately the usable lifetime of a Mars spacesuit. What the agency learns about how the materials perform on Mars will inform the design of future spacesuits for the first astronauts on the Red Planet.
This graphic shows an illustration of a prototype astronaut suit, left, along with suit samples included aboard NASA’s Perseverance rover. They are the first spacesuit materials ever sent to Mars. NASA “This is one of the forward-looking aspects of the rover’s mission — not just thinking about its current science, but also about what comes next,” said planetary scientist Marc Fries of NASA’s Johnson Space Center in Houston, who helped provide the spacesuit materials. “We’re preparing for people to eventually go and explore Mars.”
The swatches, each three-quarters of an inch square (20 millimeters square), are part of a calibration target used to test the settings of SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics and Chemicals), an instrument on the end of Perseverance’s arm.
The samples include a piece of polycarbonate helmet visor; Vectran, a cut-resistant material used for the palms of astronaut gloves; two kinds of Teflon, which has dust-repelling nonstick properties; and a commonly used spacesuit material called Ortho-Fabric. This last fabric features multiple layers, including Nomex, a flame-resistant material found in firefighter outfits; Gore-Tex, which is waterproof but breathable; and Kevlar, a strong material used in bulletproof vests that makes spacesuits more rip-resistant.
Martian Wear and Tear
Mars is far from hospitable. It has freezing temperatures, fine dust that can stick to solar panels and spacesuits (causing wear and tear on the latter), and a surface rife with perchlorates, a kind of corrosive salt that can be toxic to humans.
There’s also lots of solar radiation. Unlike Earth, which has a magnetic field that deflects much of the Sun’s radiation, Mars lost its magnetic field billions of years ago, followed by much of its atmosphere. Its surface has little protection from the Sun’s ultraviolet light (which is why researchers have looked into how rock formations and caves could provide astronauts some shielding).
“Mars is a really harsh, tough place,” said SHERLOC science team member Joby Razzell Hollis of the Natural History Museum in London. “Don’t underestimate that — the radiation in particular is pretty nasty.”
Razzell Hollis was a postdoctoral fellow at NASA’s Jet Propulsion Laboratory in Southern California from 2018 to 2021, where he helped prepare SHERLOC for arrival on Mars and took part in science operations once the rover landed. A materials scientist, Razzell Hollis has previously studied the chemical effects of sunlight on a new kind of solar panel made from plastic, as well as on plastic pollution floating in the Earth’s oceans.
He likened those effects to how white plastic lawn chairs become yellow and brittle after years in sunlight. Roughly the same thing happens on Mars, but the weathering likely happens faster because of the high exposure to ultraviolet light there.
The key to developing safer spacesuit materials will be understanding how quickly they would wear down on the Martian surface. About 50% of the changes SHERLOC witnessed in the samples happened within Perseverance’s first 200 days on Mars, with the Vectran appearing to change first.
Another nuance will be figuring out how much solar radiation different parts of a spacesuit will have to withstand. For example, an astronaut’s shoulders will be more exposed — and likely encounter more radiation — than his or her palms.
Next Steps
The SHERLOC team is working on a science paper detailing initial data on how the samples have fared on Mars. Meanwhile, scientists at NASA Johnson are eager to simulate that weathering in special chambers that mimic the carbon dioxide atmosphere, air pressure, and ultraviolet light on the Martian surface. They could then compare the results generated on Earth while putting the materials to the test with those seen in the SHERLOC data. For example, the researchers could stretch the materials until they break to check if they become more brittle over time.
“The fabric materials are designed to be tough but flexible, so they protect astronauts but can bend freely,” Fries said. “We want to know the extent to which the fabrics lose their strength and flexibility over time. As the fabrics weaken, they can fray and tear, allowing a spacesuit to leak both heat and air.”
More About Perseverance
A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover is characterizing the planet’s geology and past climate, to help pave the way for human exploration of the Red Planet, and is the first mission to collect and cache Martian rock and regolith.
NASA’s Mars Sample Return Program, in cooperation with ESA (European Space Agency), is designed to send spacecraft to Mars to collect these sealed samples from the surface and return them to Earth for in-depth analysis.
The Mars 2020 Perseverance mission is part of NASA’s Mars Exploration Program (MEP) portfolio and the agency’s Moon to Mars exploration approach, which includes Artemis missions to the Moon that will help prepare for human exploration of the Red Planet.
NASA’s Jet Propulsion Laboratory, which is managed for the agency by Caltech in Pasadena, California, built and manages operations of the Perseverance rover.
For more about Perseverance:
News Media Contacts
Andrew Good
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-2433
andrew.c.good@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
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Last Updated Mar 26, 2025 Related Terms
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By NASA
Tess Caswell, a stand-in crew member for the Artemis III Virtual Reality Mini-Simulation, executes a moonwalk in the Prototype Immersive Technology (PIT) lab at NASA’s Johnson Space Center in Houston. The simulation was a test of using VR as a training method for flight controllers and science teams’ collaboration on science-focused traverses on the lunar surface. Credit: NASA/Robert Markowitz When astronauts walk on the Moon, they’ll serve as the eyes, hands, and boots-on-the-ground interpreters supporting the broader teams of scientists on Earth. NASA is leveraging virtual reality to provide high-fidelity, cost-effective support to prepare crew members, flight control teams, and science teams for a return to the Moon through its Artemis campaign.
The Artemis III Geology Team, led by principal investigator Dr. Brett Denevi of the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, participated in an Artemis III Surface Extra-Vehicular VR Mini-Simulation, or “sim” at NASA’s Johnson Space Center in Houston in the fall of 2024. The sim brought together science teams and flight directors and controllers from Mission Control to carry out science-focused moonwalks and test the way the teams communicate with each other and the astronauts.
“There are two worlds colliding,” said Dr. Matthew Miller, co-lead for the simulation and exploration engineer, Amentum/JETSII contract with NASA. “There is the operational world and the scientific world, and they are becoming one.”
NASA mission training can include field tests covering areas from navigation and communication to astronaut physical and psychological workloads. Many of these tests take place in remote locations and can require up to a year to plan and large teams to execute. VR may provide an additional option for training that can be planned and executed more quickly to keep up with the demands of preparing to land on the Moon in an environment where time, budgets, and travel resources are limited.
VR helps us break down some of those limitations and allows us to do more immersive, high-fidelity training without having to go into the field. It provides us with a lot of different, and significantly more, training opportunities.
BRI SPARKS
NASA co-lead for the simulation and Extra Vehicular Activity Extended Reality team at Johnson.
Field testing won’t be going away. Nothing can fully replace the experience crew members gain by being in an environment that puts literal rocks in their hands and incudes the physical challenges that come with moonwalks, but VR has competitive advantages.
The virtual environment used in the Artemis III VR Mini-Sim was built using actual lunar surface data from one of the Artemis III candidate regions. This allowed the science team to focus on Artemis III science objectives and traverse planning directly applicable to the Moon. Eddie Paddock, engineering VR technical discipline lead at NASA Johnson, and his team used data from NASA’s Lunar Reconnaissance Orbiter and planet position and velocity over time to develop a virtual software representation of a site within the Nobile Rim 1 region near the south pole of the Moon. Two stand-in crew members performed moonwalk traverses in virtual reality in the Prototype Immersive Technology lab at Johnson, and streamed suit-mounted virtual video camera views, hand-held virtual camera imagery, and audio to another location where flight controllers and science support teams simulated ground communications.
A screen capture of a virtual reality view during the Artemis III VR Mini-Simulation. The lunar surface virtual environment was built using actual lunar surface data from one of the Artemis III candidate regions. Credit: Prototype Immersive Technology lab at NASA’s Johnson Space Center in Houston. The crew stand-ins were immersed in the lunar environment and could then share the experience with the science and flight control teams. That quick and direct feedback could prove critical to the science and flight control teams as they work to build cohesive teams despite very different approaches to their work.
The flight operations team and the science team are learning how to work together and speak a shared language. Both teams are pivotal parts of the overall mission operations. The flight control team focuses on maintaining crew and vehicle safety and minimizing risk as much as possible. The science team, as Miller explains, is “relentlessly thirsty” for as much science as possible. Training sessions like this simulation allow the teams to hone their relationships and processes.
Members of the Artemis III Geology Team and science support team work in a mock Science Evaluation Room during the Artemis III Virtual Reality Mini-Simulation at NASA’s Johnson Space Center in Houston. Video feeds from the stand-in crew members’ VR headsets allow the science team to follow, assess, and direct moonwalks and science activities. Credit: NASA/Robert Markowitz Denevi described the flight control team as a “well-oiled machine” and praised their dedication to getting it right for the science team. Many members of the flight control team have participated in field and classroom training to learn more about geology and better understand the science objectives for Artemis.
“They have invested a lot of their own effort into understanding the science background and science objectives, and the science team really appreciates that and wants to make sure they are also learning to operate in the best way we can to support the flight control team, because there’s a lot for us to learn as well,” Denevi said. “It’s a joy to get to share the science with them and have them be excited to help us implement it all.”
Artemis III Geology Team lead Dr. Brett Denevi of the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, left, Artemis III Geology Team member, Dr. Jose Hurtado, University of Texas at El Paso, and simulation co-lead, Bri Sparks, work together during the Artemis III Virtual Reality Mini-Simulation at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz This simulation, Sparks said, was just the beginning for how virtual reality could supplement training opportunities for Artemis science. In the future, using mixed reality could help take the experience to the next level, allowing crew members to be fully immersed in the virtual environment while interacting with real objects they can hold in their hands. Now that the Nobile Rim 1 landing site is built in VR, it can continue to be improved and used for crew training, something that Sparks said can’t be done with field training on Earth.
While “virtual” was part of the title for this exercise, its applications are very real.
“We are uncovering a lot of things that people probably had in the back of their head as something we’d need to deal with in the future,” Miller said. “But guess what? The future is now. This is now.”
Test subject crew members for the Artemis III Virtual Reality Mini-Simulation, including Grier Wilt, left, and Tess Caswell, center, execute a moonwalk in the Prototype Immersive Technology lab at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz Grier Wilt, left, and Tess Caswell, crew stand-ins for the Artemis III Virtual Reality Mini-Simulation, execute a moonwalk in the Prototype Immersive Technology (PIT) lab at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz Engineering VR technical discipline lead Eddie Paddock works with team members to facilitate the virtual reality components of the Artemis III Virtual Reality Mini-Simulation in the Prototype Immersive Technology lab at NASA’s Johnson Space Center in Houston. Credit: Robert Markowitz Flight director Paul Konyha follows moonwalk activities during the Artemis III Virtual Reality Mini-Simulation at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz
Rachel Barry
NASA’s Johnson Space Center
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By Space Force
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Coastal locations, such as Drakes Bay on the Point Reyes peninsula in Northern California, are increasingly vulnerable to sea level rise.NOAA/NMFS/WCR/CCO The information will help people who live in coastal areas prepare for impacts caused by rising sea levels.
Earth’s ocean is rising, disrupting livelihoods and infrastructure in coastal communities around the world. Agencies and organizations are working to prepare people as their world changes around them, and NASA information is helping these efforts.
The agency’s global data is now available in the sea level section of the Earth Information Center. NASA developed the global sea level change website in collaboration with the U.S. Department of Defense, the World Bank, the U.S. Department of State, and the United Nations Development Programme.
The site includes information on projected sea level rise through the year 2150 for coastlines around the world, as well as estimates of how much flooding a coastal community or region can expect to see in the next 30 years. The projections come from data collected by NASA and its partners and from computer models of ice sheets and the ocean, as well as the latest sea level assessment from the Intergovernmental Panel on Climate Change, and other sources.
“NASA innovates for the benefit of humanity. Our cutting-edge instruments and data-driven information tools help communities and organizations respond to natural hazards and extreme weather, and inform critical coastal infrastructure planning decisions,” said Karen St. Germain, director of the Earth science division at NASA Headquarters in Washington.
Information to Action
International organizations such as the World Bank will use the data from the global sea level change site for tasks including the creation of Climate Risk Profiles for countries especially vulnerable to sea level rise.
The Defense Department will continue to incorporate sea level rise data into its plans to anticipate and respond to hazards posed to its facilities by the effects of rising oceans. Similarly, the State Department uses the information for activities ranging from disaster preparedness to long-term adaptation planning to supporting partners around the world in related efforts.
“We are at a moment of truth in our fight against the climate crisis. The science is unequivocal and must serve as the bedrock upon which decision-making is built. With many communities around the world already facing severe impacts from sea-level rise, this new resource provides a vital tool to help them protect lives and livelihoods. It also illustrates what is at stake between a 1.5-degree-Celsius world and a current-policies trajectory for all coastal communities worldwide,” said Assistant Secretary-General Selwin Hart, special adviser to the United Nations secretary-general on climate action and just transition.
Rising Faster
NASA-led data analyses have revealed that between 1970 and 2023, 96% of countries with coastlines have experienced sea level rise. The rate of that global rise has also accelerated, more than doubling from 0.08 inches (0.21 centimeters) per year in 1993 to about 0.18 inches (0.45 centimeters) per year in 2023.
As the rate of sea level rise increases, millions of people could face the related effects sooner than previously projected, including larger storm surges, more saltwater intrusion into groundwater, and additional high-tide flood days — also known as nuisance floods or sunny day floods.
“This new platform shows the timing of future floods and the magnitude of rising waters in all coastal countries worldwide, connecting science and physics to impacts on people’s livelihoods and safety,” said Nadya Vinogradova Shiffer, director of the ocean physics program at NASA Headquarters in Washington.
Data released earlier this year found that Pacific Island nations will experience at least 6 inches (15 centimeters) of sea level rise in the next 30 years. The number of high-tide flood days will increase by an order of magnitude for nearly all Pacific Island nations by the 2050s.
“The data is clear: Sea levels are rising around the world, and they’re rising faster and faster,” said Ben Hamlington, a sea level researcher at NASA’s Jet Propulsion Laboratory in Southern California and head of the agency’s sea level change science team. “Having the best information to make decisions about how to plan for rising seas is more crucial than ever.”
To explore the global sea level change site:
https://earth.gov/sealevel
News Media Contacts
Karen Fox / Elizabeth Vlock
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / elizabeth.a.vlock@nasa.gov
Jane J. Lee / Andrew Wang
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-0307 / 626-379-6874
jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov
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Last Updated Nov 13, 2024 Related Terms
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By NASA
Technicians work to complete operations before propellant load occurs ahead of launch for NASA’s Europa Clipper spacecraft inside the Payload Hazardous Servicing Facility at the agency’s Kennedy Space Center in Florida on Tuesday, Sept. 11, 2024. NASA/Kim Shiflett NASA’s Europa Clipper mission moves closer to launch as technicians worked on Wednesday, Sept. 11, inside the Payload Hazardous Servicing Facility to prepare the spacecraft for upcoming propellant loading at the agency’s Kennedy Space Center in Florida.
The spacecraft will explore Jupiter’s icy moon Europa, which is considered one of the most promising habitable environments in the solar system. The mission will research whether Europa’s subsurface ocean could hold the conditions necessary for life. Europa could have all the “ingredients” for life as we know it: water, organics, and chemical energy.
Europa Clipper’s launch period opens on Thursday, Oct. 10. It will lift off on a SpaceX Falcon Heavy rocket from Kennedy’s Launch Complex 39A. The spacecraft then will embark on a journey of nearly six years and 1.8 billion miles before reaching Jupiter’s orbit in 2030.
The spacecraft is designed to study Europa’s icy shell, underlying ocean, and potential plumes of water vapor using a gravity science experiment alongside a suite of nine instruments including cameras, spectrometers, a magnetometer, and ice-penetrating radar. The data Europa Clipper collects could improve our understanding of the potential for life elsewhere in the solar system.
Photo credit: NASA/Kim Shiflett
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