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By NASA
Artemis II NASA astronauts (left to right) Reid Wiseman, Victor Glover, and Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen stand in the white room on the crew access arm of the mobile launcher at Launch Pad 39B as part of an integrated ground systems test at Kennedy Space Center in Florida on Wednesday, Sept. 20, 2023. The test ensures the ground systems team is ready to support the crew timeline on launch day.NASA/Frank Michaux With Artemis II, NASA is taking the science of living and working in space beyond low Earth orbit. While the test flight will help confirm the systems and hardware needed for human deep space exploration, the crew also will be serving as both scientists and volunteer research subjects, completing a suite of experiments that will allow NASA to better understand how human health may change in deep space environments. Results will help the agency build future interventions, protocols, and preventative measures to best protect astronauts on future missions to the lunar surface and to Mars.
Science on Artemis II will include seven main research areas:
ARCHeR: Artemis Research for Crew Health and Readiness
NASA’s Artemis II mission provides an opportunity to explore how deep space travel affects sleep, stress, cognition, and teamwork — key factors in astronaut health and performance. While these effects are well-documented in low Earth orbit, they’ve never been fully studied during lunar missions.
Artemis II astronauts will wear wristband devices that continuously monitor movement and sleep patterns throughout the mission. The data will be used for real-time health monitoring and safety assessments, while pre- and post-flight evaluations will provide deeper insights into cognition, behavior, sleep quality, and teamwork in the unique environment of deep space and the Orion spacecraft.
The findings from the test flight will inform future mission planning and crew support systems, helping NASA optimize human performance for the next era of exploration on the Moon and Mars.
Immune Biomarkers
Saliva provides a unique window into how the human immune system functions in a deep space environment. Tracing changes in astronauts’ saliva from before, during, and after the mission will enable researchers to investigate how the human body responds to deep space in unprecedented ways.
Dry saliva will be collected before, during, and after the mission. It will be blotted onto specialized paper in pocket-sized booklets since equipment needed to preserve wet spit samples in space – including refrigeration – will not be available due to volume constraints. To augment that information, liquid saliva and blood samples will be collected before and after the mission.
NASA Astronaut Randy Bresnik prepares to collect a dry saliva sample aboard the International Space Station. The process, which helps scientists investigate how the immune system is affected by spaceflight and will be part of the Artemis II mission, involves blotting saliva onto special paper that’s stored in pocket-sized booklets.Credit: NASA With these wet and dry saliva samples, scientists will gain insights into how the astronauts’ immune systems are affected by the increased stresses of radiation, isolation, and distance from Earth during their deep space flight. They also will examine whether otherwise dormant viruses are reactivated in space, as has been seen previously on the International Space Station with viruses that can cause chickenpox and shingles.
The information gathered from this study, when combined with data from other missions, will help researchers develop ways to keep crew members safe and healthy as we explore farther and travel for longer periods on deep space missions.
AVATAR: A Virtual Astronaut Tissue Analog Response
AVATAR is another important component of NASA’s strategy to gain a holistic understanding of how the deep space environment affects humans. Scientists plan to use organ-on-a-chip technology during Artemis II, marking the first time these devices will be used beyond the Van Allen belts.
Roughly the size of a USB thumb drive, the chips will measure how individual astronauts respond to deep space stressors, including extreme radiation and microgravity. The organ chips will contain cells developed from preflight blood donations provided by crew members to create miniature stand-ins, or “avatars,” of their bone marrow. Bone marrow plays a vital role in the immune system and is particularly sensitive to radiation, which is why scientists selected it for this study.
An organ chip for conducting bone marrow experiments in space. Credit: Emulate
A key goal for this research is to validate whether organ chips can serve as accurate tools for measuring and predicting human responses to stressors. To evaluate this, scientists will compare AVATAR data with space station findings, as well as with samples taken from the crew before and after flight.
AVATAR could inform measures to ensure crew health on future deep space missions, including personalizing medical kits to each astronaut. For citizens on Earth, it could lead to advancements in individualized treatments for diseases such as cancer.
AVATAR is a demonstration of the power of public-private partnerships. It’s a collaboration between government agencies and commercial space companies: NASA, National Center for Advancing Translational Sciences within the National Institutes of Health, Biomedical Advanced Research and Development Authority, Space Tango, and Emulate.
Artemis II Standard Measures
The crew also will become the first astronauts in deep space to participate in the Spaceflight Standard Measures study, an investigation that’s been collecting data from participating crew members aboard the space station and elsewhere since 2018. The study aims to collect a comprehensive snapshot of astronauts’ bodies and minds by gathering a consistent set of core measurements of physiological response.
The crew will provide biological samples including blood, urine, and saliva for evaluating nutritional status, cardiovascular health, and immunological function starting about six months before their launch. The crew also will participate in tests and surveys evaluating balance, vestibular function, muscle performance, changes in their microbiome, as well as ocular and brain health. While in space, data gathering will include an assessment of motion sickness symptoms. After landing, there will be additional tests of head, eye, and body movements, among other functional performance tasks. Data collection will continue for a month after their return.
All this information will be available for scientists interested in studying the effects of spaceflight via request to NASA’s Life Sciences Data Archive. The results from this work could lead to future interventions, technologies, and studies that help predict the adaptability of crews on a Mars mission.
Radiation Sensors Inside Orion
During the uncrewed Artemis I mission, Orion was blanketed in 5,600 passive and 34 active radiation sensors. The information they gathered assured researchers Orion’s design can provide protection for crew members from hazardous radiation levels during lunar missions. That doesn’t mean that scientists don’t want more information, however.
Similar to Artemis I, six active radiation sensors, collectively called the Hybrid Electronic Radiation Assessors, will be deployed at various locations inside the Orion crew module. Crew also will wear dosimeters in their pockets. These sensors will provide warnings of hazardous radiation levels caused by space weather events made by the Sun. If necessary, this data will be used by mission control to drive decisions for the crew to build a shelter to protect from radiation exposure due to space weather.
Additionally, NASA has again partnered the German Space Agency DLR for an updated model of their M-42 sensor – an M-42 EXT – for Artemis II. The new version offers six times more resolution to distinguish between different types of energy, compared to the Artemis I version. This will allow it to accurately measure the radiation exposure from heavy ions which are thought to be particularly hazardous for radiation risk. Artemis II will carry four of the monitors, affixed at points around the cabin by the crew.
Collectively, sensor data will paint a full picture of radiation exposures inside Orion and provide context for interpreting the results of the ARCHeR, AVATAR, Artemis II Standard Measures, and Immune Biomarkers experiments.
Lunar Observations Campaign
The Artemis II crew will take advantage of their location to explore the Moon from above. As the first humans to see the lunar surface up close since 1972, they’ll document their observations through photographs and audio recordings to inform scientists’ understanding of the Moon and share their experience of being far from Earth. It’s possible the crew could be the first humans to see certain areas of the Moon’s far side, though this will depend on the time and date of launch, which will affect which areas of the Moon will be illuminated and therefore visible when the spacecraft flies by.
Spacecraft such as NASA’s Lunar Reconnaissance Orbiter have been surveying and mapping the Moon for decades, but Artemis II provides a unique opportunity for humans to evaluate the lunar surface from above. Human eyes and brains are highly sensitive to subtle changes in color, texture, and other surface characteristics. Having the crew observe the lunar surface directly – equipped with questions that scientists didn’t even know to ask during Apollo missions – could form the basis for future scientific investigations into the Moon’s geological history, the lunar environment, or new impact sites.
This visualization simulates what the crew of Artemis II might see out the Orion windows on the day of their closest approach to the Moon. It compresses 36 hours into a little more than a minute as it flies the virtual camera on a realistic trajectory that swings the spacecraft around the Moon’s far side. This sample trajectory is timed so that the far side is fully illuminated when the astronauts fly by, but other lighting conditions are possible depending on the exact Artemis II launch date. The launch is scheduled for no later than April of 2026. NASA Goddard/Ernie Wright
It will also offer the first opportunity for an Artemis mission to integrate science flight control operations. From their console in the flight control room in mission control, a science officer will consult with a team of scientists with expertise in impact cratering, volcanism, tectonism, and lunar ice, to provide real-time data analysis and guidance to the Artemis II crew in space. During the mission, the lunar science team will be located in mission control’s Science Evaluation Room at NASA’s Johnson Space Center in Houston.
Lessons learned during Artemis II will pave the way for lunar science operations on future missions.
CubeSats
Several additional experiments are hitching a ride to space onboard Artemis II in the form of CubeSats – shoe-box-sized technology demonstrations and scientific experiments. Though separate from the objectives of the Artemis II mission, they may enhance understanding of the space environment.
Technicians install the Korea AeroSpace Administration (KASA) K-Rad Cube within the Orion stage adapter inside the Multi-Payload Processing Facility at NASA’s Kennedy Space Center in Florida on Tuesday, Sept. 2, 2025. The K-Rad Cube, about the size of a shoebox, is one of the CubeSats slated to fly on NASA’s Artemis II test flight in 2026. Credit: NASA Four international space agencies have signed agreements to send CubeSats into space aboard the SLS (Space Launch System) rocket, each with their own objectives. All will be released from an adapter on the SLS upper stage into a high-Earth orbit, where they will conduct an orbital maneuver to reach their desired orbit.
ATENEA – Argentina’s Comisión Nacional de Actividades Espaciales will collect data on radiation doses across various shielding methods, measure the radiation spectrum around Earth, collect GPS data to help optimize future mission design, and validate a long-range communications link.
K-Rad Cube – The Korea Aerospace Administration will use a dosimeter made of material designed to mimic human tissue to measure space radiation and assess biological effects at various altitudes across the Van Allen radiation belt.
Space Weather CubeSat – The Saudi Space Agency will measure aspects of space weather, including radiation, solar X-rays, solar energetic particles, and magnetic fields, at a range of distances from Earth.
TACHELES – The Germany Space Agency DLR will collect measurements on the effects of the space environment on electrical components to inform technologies for lunar vehicles.
Together, these research areas will inform plans for future missions within NASA’s Artemis campaign. Through Artemis, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and build the foundation for the first crewed missions to Mars.
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By NASA
This animation depicts water disappearing over time in the Martian river valley Neretva Vallis, where NASA’s Perseverance Mars takes the rock sample named “Sapphire Canyon” from a rock called “Cheyava Falls,” which was found in the “Bright Angel” formation. Credit: NASA Lee este comunicado de prensa en español aquí.
A sample collected by NASA’s Perseverance Mars rover from an ancient dry riverbed in Jezero Crater could preserve evidence of ancient microbial life. Taken from a rock named “Cheyava Falls” last year, the sample, called “Sapphire Canyon,” contains potential biosignatures, according to a paper published Wednesday in the journal Nature.
A potential biosignature is a substance or structure that might have a biological origin but requires more data or further study before a conclusion can be reached about the absence or presence of life.
“This finding by Perseverance, launched under President Trump in his first term, is the closest we have ever come to discovering life on Mars. The identification of a potential biosignature on the Red Planet is a groundbreaking discovery, and one that will advance our understanding of Mars,” said acting NASA Administrator Sean Duffy. “NASA’s commitment to conducting Gold Standard Science will continue as we pursue our goal of putting American boots on Mars’ rocky soil.”
NASA’s Perseverance rover discovered leopard spots on a reddish rock nicknamed “Cheyava Falls” in Mars’ Jezero Crater in July 2024. Scientists think the spots may indicate that, billions of years ago, the chemical reactions in this rock could have supported microbial life; other explanations are being considered.Credit: NASA/JPL-Caltech/MSSS NASA’s Perseverance Mars rover took this selfie, made up of 62 individual images, on July 23, 2024. A rock nicknamed “Cheyava Falls,” which has features that may bear on the question of whether the Red Planet was long ago home to microscopic life, is to the left of the rover near the center of the image.Credit: NASA/JPL-Caltech/MSSS Perseverance came upon Cheyava Falls in July 2024 while exploring the “Bright Angel” formation, a set of rocky outcrops on the northern and southern edges of Neretva Vallis, an ancient river valley measuring a quarter-mile (400 meters) wide that was carved by water rushing into Jezero Crater long ago.
“This finding is the direct result of NASA’s effort to strategically plan, develop, and execute a mission able to deliver exactly this type of science — the identification of a potential biosignature on Mars,” said Nicky Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “With the publication of this peer-reviewed result, NASA makes this data available to the wider science community for further study to confirm or refute its biological potential.”
The rover’s science instruments found that the formation’s sedimentary rocks are composed of clay and silt, which, on Earth, are excellent preservers of past microbial life. They also are rich in organic carbon, sulfur, oxidized iron (rust), and phosphorous.
“The combination of chemical compounds we found in the Bright Angel formation could have been a rich source of energy for microbial metabolisms,” said Perseverance scientist Joel Hurowitz of Stony Brook University, New York and lead author of the paper. “But just because we saw all these compelling chemical signatures in the data didn’t mean we had a potential biosignature. We needed to analyze what that data could mean.”
First to collect data on this rock were Perseverance’s PIXL (Planetary Instrument for X-ray Lithochemistry) and SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals) instruments. While investigating Cheyava Falls, an arrowhead-shaped rock measuring 3.2 feet by 2 feet (1 meter by 0.6 meters), they found what appeared to be colorful spots. The spots on the rock could have been left behind by microbial life if it had used the raw ingredients, the organic carbon, sulfur, and phosphorus, in the rock as an energy source.
In higher-resolution images, the instruments found a distinct pattern of minerals arranged into reaction fronts (points of contact where chemical and physical reactions occur) the team called leopard spots. The spots carried the signature of two iron-rich minerals: vivianite (hydrated iron phosphate) and greigite (iron sulfide). Vivianite is frequently found on Earth in sediments, peat bogs, and around decaying organic matter. Similarly, certain forms of microbial life on Earth can produce greigite.
The combination of these minerals, which appear to have formed by electron-transfer reactions between the sediment and organic matter, is a potential fingerprint for microbial life, which would use these reactions to produce energy for growth. The minerals also can be generated abiotically, or without the presence of life. Hence, there are ways to produce them without biological reactions, including sustained high temperatures, acidic conditions, and binding by organic compounds. However, the rocks at Bright Angel do not show evidence that they experienced high temperatures or acidic conditions, and it is unknown whether the organic compounds present would’ve been capable of catalyzing the reaction at low temperatures.
The discovery was particularly surprising because it involves some of the youngest sedimentary rocks the mission has investigated. An earlier hypothesis assumed signs of ancient life would be confined to older rock formations. This finding suggests that Mars could have been habitable for a longer period or later in the planet’s history than previously thought, and that older rocks also might hold signs of life that are simply harder to detect.
“Astrobiological claims, particularly those related to the potential discovery of past extraterrestrial life, require extraordinary evidence,” said Katie Stack Morgan, Perseverance’s project scientist at NASA’s Jet Propulsion Laboratory in Southern California. “Getting such a significant finding as a potential biosignature on Mars into a peer-reviewed publication is a crucial step in the scientific process because it ensures the rigor, validity, and significance of our results. And while abiotic explanations for what we see at Bright Angel are less likely given the paper’s findings, we cannot rule them out.”
The scientific community uses tools and frameworks like the CoLD scale and Standards of Evidence to assess whether data related to the search for life actually answers the question, Are we alone? Such tools help improve understanding of how much confidence to place in data suggesting a possible signal of life found outside our own planet.
Marked by seven benchmarks, the Confidence of Life Detection, or CoLD, scale outlines a progression in confidence that a set of observations stands as evidence of life. Credit: NASA Sapphire Canyon is one of 27 rock cores the rover has collected since landing at Jezero Crater in February 2021. Among the suite of science instruments is a weather station that provides environmental information for future human missions, as well as swatches of spacesuit material so that NASA can study how it fares on Mars.
Managed for NASA by Caltech, NASA JPL built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate as part of NASA’s Mars Exploration Program portfolio.
To learn more about Perseverance visit:
https://science.nasa.gov/mission/mars-2020-perseverance
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Bethany Stevens / Karen Fox
Headquarters, Washington
202-358-1600
bethany.c.stevens@nasa.gov / karen.c.fox@nasa.gov
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
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Last Updated Sep 10, 2025 EditorJessica TaveauLocationNASA Headquarters Related Terms
Perseverance (Rover) Astrobiology Mars Mars 2020 Planetary Science Science Mission Directorate View the full article
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By NASA
NASA’s Perseverance Mars rover took this selfie on September 10, 2021, the 198th Martian day, or sol of its mission.Credit: NASA/JPL-Caltech NASA will host a news conference at 11 a.m. EDT Wednesday, to discuss the analysis of a rock sampled by the agency’s Perseverance Mars rover last year, which is the subject of a forthcoming science paper. The agency previously announced this event as a teleconference.
Watch the news conference on NASA’s YouTube channel and the agency’s website. Learn how to watch NASA content through a variety of platforms, including social media.
Participants include:
Acting NASA Administrator Sean Duffy NASA Associate Administrator Amit Kshatriya Nicky Fox, associate administrator, Science Mission Directorate, NASA Headquarters in Washington Lindsay Hays, senior scientist for Mars Exploration, Planetary Science Division, NASA Headquarters Katie Stack Morgan, Perseverance project scientist, NASA’s Jet Propulsion Laboratory in Southern California Joel Hurowitz, planetary scientist, Stony Brook University, New York To ask questions by phone, members of the media must RSVP no later than one hour before the start of the event to: rexana.v.vizza@jpl.nasa.gov. Media who registered for the earlier teleconference-only version of this event do not need to re-register. NASA’s media accreditation policy is available online.
The sample, called “Sapphire Canyon,” was collected in July 2024 from a set of rocky outcrops on the edges of Neretva Vallis, a river valley carved by water rushing into Jezero Crater long ago.
Since landing in the Red Planet’s Jezero Crater in February 2021, Perseverance has collected 30 samples. The rover still has six empty sample tubes to fill, and it continues to collect detailed information about geologic targets that it hasn’t sampled by using its abrasion tool. Among the rover’s science instruments is a weather station that provides environmental information for future human missions, as well as swatches of spacesuit material so that NASA can study how it fares on Mars.
Managed for NASA by Caltech, JPL built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate as part of NASA’s Mars Exploration Program portfolio.
To learn more about Perseverance visit:
https://www.nasa.gov/perseverance
-end-
Bethany Stevens / Karen Fox
Headquarters, Washington
202-358-1600
bethany.c.stevens@nasa.gov / karen.c.fox@nasa.gov
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
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Details
Last Updated Sep 10, 2025 LocationNASA Headquarters Related Terms
Perseverance (Rover) Mars 2020 Planetary Science Division Science Mission Directorate
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By NASA
Explore This Section Perseverance Home Mission Overview Rover Components Mars Rock Samples Where is Perseverance? Ingenuity Mars Helicopter Mission Updates Science Overview Objectives Instruments Highlights Exploration Goals News and Features Multimedia Perseverance Raw Images Images Videos Audio More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 2 min read
Perseverance Meets the Megabreccia
NASA’s Mars Perseverance rover acquired this image of the “Scotiafjellet” workspace on Aug. 31, 2025, using its onboard Left Navigation Camera (Navcam). The camera is located high on the rover’s mast and aids in driving. This image was acquired on Sol 1610, or Martian day 1,610 of the Mars 2020 mission, at the local mean solar time of 14:52:20. NASA/JPL-Caltech Written by By Henry Manelski, Ph.D. student at Purdue University
Last week, the Perseverance rover began an exciting new journey. Driving northwest of the Soroya ridge, Perseverance entered an area filled with a diverse range of boulders that the science team believes could hold clues to Mars’ early history. The terrain we are exploring is known as megabreccia: a chaotic mixture of broken rock fragments likely produced during ancient asteroid impacts. Some blocks may have originated in the gargantuan Isidis impact event, which created a 1,200-mile-wide crater (about 1,930 kilometers) just east of Jezero. Studying megabreccia could help us link Jezero’s geology to the wider region around Isidis Basin, tying local observations to Mars’ global history.
The rover is now beginning a systematic exploration of these rocks, starting at Scotiafjellet. If they are truly megabreccia, they could contain pieces of deep crustal material, offering a rare glimpse into Mars’ interior. These rocks likely predate the deltaic and volcanic deposits we explored earlier in Jezero Crater, making them some of the oldest accessible rocks Perseverance will ever encounter. They may therefore reveal to what extent water was present on ancient Mars — a key question as we continue our search for signs of past life on the Red Planet. In short, by venturing into this jumbled terrain, Perseverance is giving us a front-row seat to the earliest chapters of Mars’ story.
Want to read more posts from the Perseverance team?
Visit Mission Updates
Want to learn more about Perseverance’s science instruments?
Visit the Science Instruments page
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Last Updated Sep 08, 2025 Related Terms
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By NASA
NASA’s Perseverance Mars rover took this selfie on September 10, 2021, the 198th Martian day, or sol of its mission. Credit: NASA/JPL-Caltech NASA will host a media teleconference at 11 a.m. EDT Wednesday, Sept. 10, to discuss the analysis of a rock sampled by the agency’s Perseverance Mars rover last year, which is the subject of a forthcoming science paper.
The sample, called “Sapphire Canyon,” was collected in July 2024 from a set of rocky outcrops on the edges of Neretva Vallis, a river valley carved by water rushing into Jezero Crater long ago.
Audio and visuals of the call will stream on the agency’s website at:
https://www.nasa.gov/live
Participants in the teleconference include:
Acting NASA Administrator Sean Duffy Nicky Fox, associate administrator, Science Mission Directorate, NASA Headquarters in Washington Lindsay Hays, Senior Scientist for Mars Exploration, Planetary Science Division, NASA Headquarters Katie Stack Morgan, Perseverance Project Scientist, NASA’s Jet Propulsion Laboratory in Southern California Joel Hurowitz, planetary scientist, Stony Brook University, New York To ask questions by phone, members of the media must RSVP no later than two hours before the start of the event to: rexana.v.vizza@jpl.nasa.gov. NASA’s media accreditation policy is available online.
Since landing in the Red Planet’s Jezero Crater in February 2021, Perseverance has collected 30 samples. The rover still has six empty sample tubes to fill, and it continues to collect detailed information about geologic targets that it hasn’t sampled by using its abrasion tool. Among the rover’s science instruments is a weather station that provides environmental information for future human missions, as well as swatches of spacesuit material so that NASA can study how it fares on Mars.
Managed for NASA by Caltech, JPL built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate as part of NASA’s Mars Exploration Program portfolio.
To learn more about Perseverance visit:
https://www.nasa.gov/perseverance
-end-
Bethany Stevens / Karen Fox
Headquarters, Washington
202-358-1600
bethany.c.stevens@nasa.gov / karen.c.fox@nasa.gov
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
Share
Details
Last Updated Sep 08, 2025 LocationNASA Headquarters Related Terms
Perseverance (Rover) Mars Mars 2020 Planetary Science Division Science Mission Directorate View the full article
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