NASA crew completes 378-day simulated Mars mission in Houston
Four astronauts emerged from isolation at the Johnson Space Center after simulating life on Mars in a 3D-printed habitat.
A four-member crew has finished a 378-day simulated Mars mission at the US space agency’s Johnson Space Center in Houston, according to BusinessLine. The Crew Health and Performance Exploration Analog, or CHAPEA, mission aimed to prepare for future NASA astronaut missions to Mars.
The crew, which included mission commander Ross Elder, science officer Matthew Montgomery, flight engineer James Spicer, and medical officer Ellen Ellis, entered a 1,700-square-foot 3D-printed habitat on October 19, 2025. During the isolation, they performed tasks such as cultivating crops in simulated Martian soil and using delayed communication methods to mimic interplanetary lags.
Johnson Space Center director Vanessa Wyche greeted the team on Saturday, noting they successfully operated within the habitat using restricted resources. Wyche said the crew handled simulated communication delays, which require the patience and independence necessary for deep-space travel.
Mission commander Ross Elder said that while the risks of Mars are high, putting humans on the planet is achievable through hard work and leadership. Medical officer Ellen Ellis remarked that the crew lived in captivity of their own free will during the year-long endeavour.
This was the second CHAPEA mission, following a previous 378-day mission conducted between 2023 and 2024. The crew will now undergo two weeks of debriefings and evaluations with NASA scientists to provide insights into long-duration space travel.
NASA intends to return astronauts to the Moon before its goal of sending humans to Mars, which could happen as early as the 2030s.