Four crew members emerge after 378 days in simulated Mars mission
The CHAPEA mission at NASA's Johnson Space Center aimed to prepare astronauts for future interplanetary travel.
A four-member crew has completed a 378-day simulated Mars mission at the Johnson Space Center in Houston, according to The Tribune. The crew members emerged from isolation on Saturday after living in a 1,700-square-foot 3D-printed habitat since October 19, 2025.
The Crew Health and Performance Exploration Analog (CHAPEA) mission involved tasks such as growing crops in simulated Martian soil. The crew also practiced communicating with NASA officials using delays designed to mimic interplanetary communication lags.
Medical officer Ellen Ellis described the experience as a difficult year spent in voluntary captivity. She noted that the mission is part of efforts to maintain US space preeminence and mentioned plans for a lunar base.
Mission commander Ross Elder stated that while the risks for Mars are high, the goal of sending humans there is achievable through hard work and leadership. Other crew members included science officer Matthew Montgomery and flight engineer James Spicer.
Johnson Space Center director Vanessa Wyche said the crew successfully managed limited resources and simulated Mars operations. She noted that the communication delays required patience and independence, which are essential for future astronauts.
The crew will now undergo two weeks of debriefing and evaluations with NASA scientists. This was the second CHAPEA mission, following a similar four-person mission that took place between 2023 and 2024.