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By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
This mosaic showing the Martian surface outside of Jezero Crater was taken by NASA’s Perseverance on Dec. 25, 2024, at the site where the rover cored a sample dubbed “Silver Mountain” from a rock likely formed during Mars’ earliest geologic period.NASA/JPL-Caltech/ASU/MSSS The diversity of rock types along the rim of Jezero Crater offers a wide glimpse of Martian history.
Scientists with NASA’s Perseverance rover are exploring what they consider a veritable Martian cornucopia full of intriguing rocky outcrops on the rim of Jezero Crater. Studying rocks, boulders, and outcrops helps scientists understand the planet’s history, evolution, and potential for past or present habitability. Since January, the rover has cored five rocks on the rim, sealing samples from three of them in sample tubes. It’s also performed up-close analysis of seven rocks and analyzed another 83 from afar by zapping them with a laser. This is the mission’s fastest science-collection tempo since the rover landed on the Red Planet more than four years ago.
Perseverance climbed the western wall of Jezero Crater for 3½ months, reaching the rim on Dec. 12, 2024, and is currently exploring a roughly 445-foot-tall (135-meter-tall) slope the science team calls “Witch Hazel Hill.” The diversity of rocks they have found there has gone beyond their expectations.
“During previous science campaigns in Jezero, it could take several months to find a rock that was significantly different from the last rock we sampled and scientifically unique enough for sampling,” said Perseverance’s project scientist, Katie Stack Morgan of NASA’s Jet Propulsion Laboratory in Southern California. “But up here on the crater rim, there are new and intriguing rocks everywhere the rover turns. It has been all we had hoped for and more.”
One of Perseverance’s hazard cameras captured the rover’s coring drill collecting the “Main River” rock sample on “Witch Hazel Hill” on March 10, 2025, the 1,441st Martian day, or sol, of the mission. NASA/JPL-Caltech That’s because Jezero Crater’s western rim contains tons of fragmented once-molten rocks that were knocked out of their subterranean home billions of years ago by one or more meteor impacts, including possibly the one that produced Jezero Crater. Perseverance is finding these formerly underground boulders juxtaposed with well-preserved layered rocks that were “born” billions of years ago on what would become the crater’s rim. And just a short drive away is a boulder showing signs that it was modified by water nestled beside one that saw little water in its past.
Oldest Sample Yet?
Perseverance collected its first crater-rim rock sample, named “Silver Mountain,” on Jan. 28. (NASA scientists informally nickname Martian features, including rocks and, separately, rock samples, to help keep track of them.) The rock it came from, called “Shallow Bay,” most likely formed at least 3.9 billion years ago during Mars’ earliest geologic period, the Noachian, and it may have been broken up and recrystallized during an ancient meteor impact.
About 360 feet (110 meters) away from that sampling site is an outcrop that caught the science team’s eye because it contains igneous minerals crystallized from magma deep in the Martian crust. (Igneous rocks can form deep underground from magma or from volcanic activity at the surface, and they are excellent record-keepers — particularly because mineral crystals within them preserve details about the precise moment they formed.) But after two coring attempts (on Feb. 4 and Feb. 8) fizzled due to the rock being so crumbly, the rover drove about 520 feet (160 meters) northwest to another scientifically intriguing rock, dubbed “Tablelands.”
Data from the rover’s instruments indicates that Tablelands is made almost entirely of serpentine minerals, which form when large amounts of water react with iron- and magnesium-bearing minerals in igneous rock. During this process, called serpentinization, the rock’s original structure and mineralogy change, often causing it to expand and fracture. Byproducts of the process sometimes include hydrogen gas, which can lead to the generation of methane in the presence of carbon dioxide. On Earth, such rocks can support microbial communities.
Coring Tablelands went smoothly. But sealing it became an engineering challenge.
Sealing the “Green Gardens” sample — collected by NASA’s Perseverance Mars rover from a rock dubbed “Tablelands” along the rim of Jezero Crater on Feb. 16, 2025 — pre-sented an engineering challenge. The sample was finally sealed on March 2.NASA/JPL-Caltech/ASU/MSSS Flick Maneuver
“This happened once before, when there was enough powdered rock at the top of the tube that it interfered with getting a perfect seal,” said Kyle Kaplan, a robotics engineer at JPL. “For Tablelands, we pulled out all the stops. Over 13 sols,” or Martian days, “we used a tool to brush out the top of the tube 33 times and made eight sealing attempts. We even flicked it a second time.”
During a flick maneuver, the sample handling arm — a little robotic arm in the rover’s belly — presses the tube against a wall inside the rover, then pulls the tube away, causing it to vibrate. On March 2, the combination of flicks and brushings cleaned the tube’s top opening enough for Perseverance to seal and store the serpentine-laden rock sample.
Eight days later, the rover had no issues sealing its third rim sample, from a rock called “Main River.” The alternating bright and dark bands on the rock were like nothing the science team had seen before.
Up Next
Following the collection of the Main River sample, the rover has continued exploring Witch Hazel Hill, analyzing three more rocky outcrops (“Sally’s Cove,” “Dennis Pond,” and “Mount Pearl”). And the team isn’t done yet.
“The last four months have been a whirlwind for the science team, and we still feel that Witch Hazel Hill has more to tell us,” said Stack. “We’ll use all the rover data gathered recently to decide if and where to collect the next sample from the crater rim. Crater rims — you gotta love ’em.”
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 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, managed for the agency by Caltech in Pasadena, California, built and manages operations of the Perseverance rover.
For more about Perseverance:
https://science.nasa.gov/mission/mars-2020-perseverance
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
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Last Updated Apr 10, 2025 Related Terms
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This new snapshot from the European Space Agency’s Mars Express deftly captures the two distinct faces of Mars: ridged and rugged versus smooth and unmarked.
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By NASA
Explore This Section Science Science Activation Findings from the Field: A… Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science 3 min read
Findings from the Field: A Research Symposium for Student Scientists
Within the scientific community, peer review has become the process norm for which an author’s research or ideas undergo careful examination by other experts in their field. It encourages each scientist to meet the high standards that they themselves, as writers and reviewers, have aided in setting. It has become essential to the academic writing practice.
Historically, the peer review process has been limited to higher education and scholars more established in their academic careers. It has been required by only the more reputable publications, which can mean that lesser-known journals that don’t require this rigorous peer review process contain lower quality or less reliable information.
In an effort to give scientists of all ages the opportunity to participate in and contribute to the advancement of human knowledge in a meaningful and reliable way, the Gulf of Maine Research Institute (GMRI) began publishing Findings from the Field, a journal of student ecological and environmental science, launched in 2017. Students conduct authentic scientific inquiry, subject their research to the peer review process, and submit their revised work for editorial board review before publication—the same process a NASA scientist must go through! This hands-on, real-world experience in scientific communication sharpens these young scientists’ skills and immerses them in the collaborative nature of research—an essential foundation for the next generation of scientists.
After 7 years and 7 published volumes, Findings from the Field was ready to expand, and the Findings Student Research Symposium was launched. The Symposium was a success from the start, with 65 student scientists joining the event the first year and attendance climbing to 95 for year two. On March 10, 2025, GMRI (the anchor institution for the NASA Science Activation program’s Learning Ecosystems Northeast (LENE) project) welcomed nearly 100 young scientists, ranging from grades 5-12. These students, representing eight schools across Maine and New Hampshire, came together to share their research and engage in an evolving, intergenerational scientific community—one that fosters curiosity, collaboration, and scientific discovery.
Students presented their research through posters and live presentations, covering topics ranging from invasive green crab species, to the changing landscapes of Ash and Hemlock trees, and more. By connecting students with professional researchers, fostering peer discussions, and providing a platform for publishing legitimate scientific work, the Findings Symposium is a launch pad for the future of the scientific community.
One important element of the Symposium is the opportunity for young scientists to dialogue with professional scientists. Students engaged with researchers from Markus Frederich’s lab at the University of New England, volunteers from local organizations like Unum and Avangrid, and expert staff from GMRI.
Student Madalyn Bartlett from Sacoppee Valley Middle School shared, “It makes me feel really proud, because I get to talk to professional scientists that have a lot of experience in this, and it make me feel like I am contributing to something bigger than my school and my community.”
These interactions emphasize that science isn’t confined to white coats and labs—it’s about curiosity, observation, and shared knowledge. The keynote speaker, Kat Gardner-Vandy from a former NASA Science Activation project team, Native Earth | Native Sky, reinforced this message, inspiring students to see themselves as vital contributors to science and our collective knowledge about the world.
The Learning Ecosystems Northeast project is supported by NASA under cooperative agreement award number NNX16AB94A and is part of NASA’s Science Activation Portfolio. Learn more about Learning Ecosystems Northeast: https://www.learningecosystemsnortheast.org/
Native Earth | Native Sky’s Kat Gardner-Vandy delivering the keynote speech to students at the Findings Symposium. Share
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By NASA
NASA astronauts (left to right) Christina Koch, Victor Glover, Reid Wiseman, Canadian Space Agency Astronaut Jeremy Hansen. Credit: NASA/Josh Valcarcel The Artemis II test flight will be NASA’s first mission with crew under Artemis. Astronauts on their first flight aboard NASA’s Orion spacecraft will confirm all of the spacecraft’s systems operate as designed with crew aboard in the actual environment of deep space. Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.
The unique Artemis II mission profile will build upon the uncrewed Artemis I flight test by demonstrating a broad range of SLS (Space Launch System) and Orion capabilities needed on deep space missions. This mission will prove Orion’s critical life support systems are ready to sustain our astronauts on longer duration missions ahead and allow the crew to practice operations essential to the success of Artemis III and beyond.
Leaving Earth
The mission will launch a crew of four astronauts from NASA’s Kennedy Space Center in Florida on a Block 1 configuration of the SLS rocket. Orion will perform multiple maneuvers to raise its orbit around Earth and eventually place the crew on a lunar free return trajectory in which Earth’s gravity will naturally pull Orion back home after flying by the Moon. The Artemis II astronauts are NASA’s Reid Wiseman, Victor Glover, and Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen.
The initial launch will be similar to Artemis I as SLS lofts Orion into space, and then jettisons the boosters, service module panels, and launch abort system, before the core stage engines shut down and the core stage separates from the upper stage and the spacecraft. With crew aboard this mission, Orion and the upper stage, called the interim cryogenic propulsion stage (ICPS), will then orbit Earth twice to ensure Orion’s systems are working as expected while still close to home. The spacecraft will first reach an initial orbit, flying in the shape of an ellipse, at an altitude of about 115 by 1,400 miles. The orbit will last a little over 90 minutes and will include the first firing of the ICPS to maintain Orion’s path. After the first orbit, the ICPS will raise Orion to a high-Earth orbit. This maneuver will enable the spacecraft to build up enough speed for the eventual push toward the Moon. The second, larger orbit will take approximately 23.5 hours with Orion flying in an ellipse between about 115 and 46,000 miles above Earth. For perspective, the International Space Station flies a nearly circular Earth orbit about 250 miles above our planet.
After the burn to enter high-Earth orbit, Orion will separate from the upper stage. The expended stage will have one final use before it is disposed through Earth’s atmosphere—the crew will use it as a target for a proximity operations demonstration. During the demonstration, mission controllers at NASA’s Johnson Space Center in Houston will monitor Orion as the astronauts transition the spacecraft to manual mode and pilot Orion’s flight path and orientation. The crew will use Orion’s onboard cameras and the view from the spacecraft’s windows to line up with the ICPS as they approach and back away from the stage to assess Orion’s handling qualities and related hardware and software. This demonstration will provide performance data and operational experience that cannot be readily gained on the ground in preparation for critical rendezvous, proximity operations and docking, as well as undocking operations in lunar orbit beginning on Artemis III.
Checking Critical Systems
Following the proximity operations demonstration, the crew will turn control of Orion back to mission controllers at Johnson and spend the remainder of the orbit verifying spacecraft system performance in the space environment. They will remove the Orion Crew Survival System suit they wear for launch and spend the remainder of the in-space mission in plain clothes, until they don their suits again to prepare for reentry into Earth’s atmosphere and recovery from the ocean.
While still close to Earth, the crew will assess the performance of the life support systems necessary to generate breathable air and remove the carbon dioxide and water vapor produced when the astronauts breathe, talk, or exercise. The long orbital period around Earth provides an opportunity to test the systems during exercise periods, where the crew’s metabolic rate is the highest, and a sleep period, where the crew’s metabolic rate is the lowest. A change between the suit mode and cabin mode in the life support system, as well as performance of the system during exercise and sleep periods, will confirm the full range of life support system capabilities and ensure readiness for the lunar flyby portion of the mission.
Orion will also checkout the communication and navigation systems to confirm they are ready for the trip to the Moon. While still in the elliptical orbit around Earth, Orion will briefly fly beyond the range of GPS satellites and the Tracking and Data Relay Satellites of NASA’s Space Network to allow an early checkout of agency’s Deep Space Network communication and navigation capabilities. When Orion travels out to and around the Moon, mission control will depend on the Deep Space Network to communicate with the astronauts, send imagery to Earth, and command the spacecraft.
After completing checkout procedures, Orion will perform the next propulsion move, called the translunar injection (TLI) burn. With the ICPS having done most of the work to put Orion into a high-Earth orbit, the service module will provide the last push needed to put Orion on a path toward the Moon. The TLI burn will send crew on an outbound trip of about four days and around the backside of the Moon where they will ultimately create a figure eight extending over 230,000 miles from Earth before Orion returns home.
To the Moon and “Free” Ride Home
On the remainder of the trip, astronauts will continue to evaluate the spacecraft’s systems, including demonstrating Earth departure and return operations, practicing emergency procedures, and testing the radiation shelter, among other activities.
The Artemis II crew will travel approximately 4,600 miles beyond the far side of the Moon. From this vantage point, they will be able to see the Earth and the Moon from Orion’s windows, with the Moon close in the foreground and the Earth nearly a quarter-million miles in the background.
With a return trip of about four days, the mission is expected to last about 10 days. Instead of requiring propulsion on the return, this fuel-efficient trajectory harnesses the Earth-Moon gravity field, ensuring that—after its trip around the far side of the Moon—Orion will be pulled back naturally by Earth’s gravity for the free return portion of the mission.
Two Missions, Two Different Trajectories
Following Artemis II, Orion and its crew will once again travel to the Moon, this time to make history when the next astronauts walk on the lunar surface. Beginning with Artemis III, missions will focus on establishing surface capabilities and building Gateway in orbit around the Moon.
Through Artemis, NASA will explore more of the Moon than ever before and create an enduring presence in deep space.
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Students from Universidad Católica Boliviana “San Pablo” compete during NASA’s 2024 Human Exploration Rover Challenge. The 2025 competition takes place Friday and Saturday, April 11-12, 2025, at the U.S. Space & Rocket Center’s Aviation Challenge course in Huntsville, Alabama. NASA NASA’s annual Human Exploration Rover Challenge returns Friday, April 11, and Saturday, April 12, with student teams competing at the U.S. Space & Rocket Center’s Aviation Challenge course near the agency’s Marshall Space Flight Center in Huntsville, Alabama.
Media are invited to watch as hundreds of students from around the world attempt to navigate a complex obstacle course by piloting a vehicle of their own design and production. Media interested in attending or setting up interviews should contact Taylor Goodwin in the Marshall Office of Communications at 938-210-2891 no later than 2 p.m. Thursday, April 10.
In addition to the traditional human-powered rover division, this year’s competition expands the challenge to include a remote-control division. The 2025 HERC Handbook includes guidelines for the new remote-control division and updates for the human-powered division.
Participating teams represent 35 colleges and universities, 38 high schools, and two middle schools from 20 states, Puerto Rico, and 16 other nations.
The event is free and open to the public, with rover excursions from 7:30 a.m. to 3 p.m. CDT each day, or until the last rover completes the obstacle course.
Following the competition, NASA will host an in-person awards ceremony Saturday, April 12, at 5:30 p.m. inside the Space Camp Operations Center at the U.S. Space & Rocket Center. NASA and industry sponsors will present multiple awards highlighting team successes throughout the past eight-months-long engineering design project, including awards for best rover design, best pit crew, best social media presence, and many other accomplishments.
About the Challenge
Recognized as NASA’s leading international student challenge, the Human Exploration Rover Challenge aims to put competitors in the mindset of NASA’s Artemis campaign. Teams pitch an engineering design for a lunar rover which simulates astronauts exploring the lunar surface while overcoming various obstacles. Eligible teams compete to be among the top three finishers in their divisions, and to win multiple awards, including best vehicle design, best rookie team, and more.
The annual challenge draws hundreds of students from around the world and reflects the goals of NASA’s Artemis campaign, which will establish the first long-term presence on the Moon and pave the way for eventual missions to Mars.
The event was launched in 1994 as the NASA Great Moonbuggy Race – a collegiate competition to commemorate the 25th anniversary of the Apollo 11 lunar landing. It expanded in 1996 to include high school teams, evolving again in 2014 into the NASA Human Exploration Rover Challenge. Since its inception, more than 15,000 students have participated – with many former students now working in the aerospace industry, including with NASA.
The Human Exploration Rover Challenge is managed by NASA Marshall’s Southeast Regional Office of STEM Engagement and is one of eight Artemis Student Challenges. NASA’s Office of STEM Engagement uses challenges and competitions to further the agency’s goal of encouraging students to pursue degrees and careers in science, technology, engineering, and mathematics.
To learn more about the challenge, visit:
https://www.nasa.gov/roverchallenge/
Taylor Goodwin
256-544-0034
Marshall Space Flight Center, Huntsville, Alabama
taylor.goodwin@nasa.gov
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Last Updated Apr 04, 2025 EditorBeth RidgewayLocationMarshall Space Flight Center Related Terms
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