NASA's yearlong Mars simulation crew emerges after 378 days in isolation
Four volunteer astronauts exit the CHAPEA habitat in Houston after nearly a year confined to a 1,700-square-foot 3D-printed facility.
What to know
- Four NASA volunteers completed a 378-day isolation in a simulated Mars habitat, exiting on October 31, 2026, after living in a 1,700-square-foot 3D-printed facility since October 2025.
- The CHAPEA Mission 2 collected health and performance data to inform NASA's preparation for deep-space missions, including food systems, crew time efficiency, and behavioral support for astronauts.
- NASA aims to send humans to Mars as early as the 2030s, with this simulation feeding directly into preparations for lunar and Martian missions.
“The four volunteers who lived and worked in a simulated NASA Mars mission for more than a year will exit their habitat on Saturday, Oct. 31, after 378 days of isolation.”
NASA, Space agency announcement · NASA.gov ↗ · Oct 26
Ross Elder CHAPEA Mission 2 crew memberEllen Ellis Medical officer, CHAPEA Mission 2James Spicer CHAPEA Mission 2 crew memberMatthew Montgomery CHAPEA Mission 2 crew memberNASA Space agency conducting Mars simulation research
How it unfolded 3 developments, newest first · click a bar or a number to jump articlesposts
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Ellen Ellis describes the year-long confinement experience
Medical officer Ellen Ellis reflects on the completion of the mission after spending the year living in isolation as part of the CHAPEA program.
“It's been a hell of a year — analogue astronauts living in captivity of our own free will.”
— Ellen Ellis -
Science is not bad, but certain populistic assumptions like "Average human will get mad without a crowd!", "Average human will not be able to stand a year without sex!" are obviously lame but somehow reappear quite often. There are thousands of people on Earth that live in isolation at any given moment. From Antarctic expeditions and astronauts…
2 more of the top 3 · 11 posts in this stretch
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Sono rimasti in isolamento per 378 giorni fingendo di trovarsi su Marte. Per i quattro componenti della missione CHAPEA si è conclusa un'esperienza che sarà utile per pianificare i futuri viaggi verso il Pianeta Rosso https://www. reuters.com/science/crew-nasas -simulated-mars-mission-emerges-after-378-days-isolation-2026-11-01/
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I don’t think there’s any doubt people can do it. The studies exist to find out what the negative impacts are, and what can be done to mitigate them. Your examples actually make that case. Submarine crews and polar winter-over teams are exactly the groups where researchers have documented sleep disruption, mood changes, and interpersonal friction…
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Four-person crew exits Mars simulation after 378 days
The CHAPEA Mission 2 crew emerged from the simulated Mars habitat after 378 days of continuous isolation, stepping outside the facility for the first time in over a year.
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15 outlets first by Telegraph India, 7d ago · also BigGo Finance, BusinessLine, MiNDFOOD, The Independent, CGTN, The Times of India +8 · read ↗
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3 outlets first by ABC13 Houston, 8d ago · also NASA (.gov), NASA · read ↗
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- 3 days quiet
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NASA announces media invitation for crew's exit ceremony
NASA invites media to cover the CHAPEA Mission 2 crew's exit on October 31, with live streaming of the ceremony starting at 3 p.m. EDT and remarks from Johnson Center Director Vanessa Wyche, NASA astronaut Jack Hathaway, and the four crew members.
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background
CHAPEA Mission 2 begins with four-person crew in simulated Mars habitat — Four volunteers—Ross Elder, Ellen Ellis, James Spicer, and Matthew Montgomery—entered a 3D-printed 1,700-square-foot facility at NASA's Johnson Space Center to begin a year-long simulation of Mars mission operations, including simulated spacewalks, habitat maintenance, plant growth, and operations under stressors like communication delays and resource limitations.
What people are saying 8 voices from 1 site · best of 11 · verbatim
- Nov 3
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So many examples of this. Crossing the seas, submarines, flight, going to the moon. Countless people have died against the elements. Mars will be no different.
- Nov 2
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For some reason I can’t help but think that the Russians or the Chinese would see that as Level 1 and find some way to make it much harder and realistic with zero way they could exit the situation in those 378 days.
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You expect redditors to read the article? Most here don't have a PhD, but pretend they do. Most live in their mom's basement and just have the most pessimistic view imaginable on any possible issue. This was a funded study by extremely qualified scientists and participants who were volunteers who were also highly qualified ( not exploited for…
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More than 1/2 a dozen people die from lightning strikes. The part you appear to have not noticed is how many people are climbing Everest, vs walking in a park, vs being outside during a thunderstorm.
- Nov 1
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I see it a lot.. ive used it before. While this subject is a bit more board i think the overall referal to it being a reddit thing is that this place tends to be a echo chamber. So weir opinions exist only on reddit and not anywhere else.. hence a reddit moment.
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They arent just testing "do people go crazy in this situation?" They're getting information on the human factors that will affect the success of a mission to mars. That's a lot cheaper to test on earth before you spend billions sending people to the other side of the solar system
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Are you seriously comparing these situations to being stuck on another, hostile planet that cannot support life?
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That's not new. We know there are many toxic things on Martian soil and some are carcinogenic. The general M.O. for manned missions on other worlds has always prioritized keeping outside dirt out as much as possible and not come into contract with it. Learned that from the Apollo missions where lunar regolith was especially dangerous to breathe in…