A year inside the habitat
Four volunteers have completed a yearlong simulation of life on Mars, stepping out of a 3D-printed habitat in Houston after 378 days without contact with the outside world, according to The Independent. The crew exited on Saturday at NASA's Johnson Space Center.
They had lived in the 1,700-square-foot (158-square-meter) structure since Oct. 19, 2025. The exercise is part of NASA's Crew Health and Performance Exploration Analog, known as CHAPEA, which is meant to help prepare astronauts for a possible journey to Mars.
Their work during the simulated mission included growing crops in simulated Martian soil. They also communicated with NASA officials under delays designed to recreate those inherent in interplanetary communications.
Who was on the crew
The crew consisted of mission commander Ross Elder, science officer Matthew Montgomery, flight engineer James Spicer and medical officer Ellen Ellis.
Speaking at Johnson Space Center after emerging, Ellis described the experience with humor. "It's been a hell of a year — analog astronauts living in captivity of our own free will," she said.
Elder struck an optimistic note about the larger goal. "For Mars, the risks are great," he said, adding that the goal of putting humans on Mars "is not only achievable, but rather inevitable."
Calls for US leadership in space
Ellis used her remarks to urge continued American investment in space. "We have a narrowing window of opportunity to maintain US preeminence in space," she said, according to the report.
She referred to a service academy for space-related operations pursued by President Donald Trump's administration, as well as plans for a lunar base. "Let's seize the initiative, lead with science that will benefit our economy and ensure our legacy in space for our children's children," Ellis said.
What NASA says it learned
Vanessa Wyche, director of the Johnson Space Center, greeted the crew as they left the habitat. She said they had managed to live with limited resources, maintain their living quarters and carry out simulated Mars operations.
Wyche also pointed to how the crew handled lag times between sending messages and receiving replies. "These delays require patience, careful planning and greater independence — qualities that will be essential for future astronauts traveling millions of miles from home," she said. She added that lessons from the crew will help pave the way for missions to the moon and "one day, Mars."
What happens next
The crew is scheduled for two weeks of post-mission evaluations and debriefing with NASA scientists. NASA has said it wants insight into how astronauts adapt to the routines and demands of daily life on long-duration missions beyond Earth while staying healthy, productive and connected.
The agency has explored Mars with robotic rovers and orbiting spacecraft and has ambitions for a human mission as early as the 2030s. Before that, it plans to return astronauts to the moon for the first time since 1972.
This was NASA's second CHAPEA mission. Another four-person crew spent 378 days in isolation at Johnson Space Center spanning 2023 and 2024.
