Summary
Four NASA CHAPEA crew members completed a simulated Mars mission on Oct. 31, 2026, after spending more than a year testing systems and managing mission-like tasks. NASA says their experiences will inform future Moon Base design and Mars mission planning.
NASA’s four-member Crew Health and Performance Exploration Analog (CHAPEA) crew completed a simulated Mars journey on Oct. 31, 2026, and posed outside together for the first time in more than a year. The crew’s experience was part of a NASA effort to study how people adapt to long-duration stays and to inform future Moon Base design and Mars mission planning.
What the crew did during the simulation
Crew members Matthew Montgomery, James Spicer, Ross Elder and Ellen Ellis spent more than a year testing systems, maintaining crops and managing limited resources and communication delays. They also conducted extravehicular activities—tasks carried out outside a spacecraft or habitat.
CHAPEA is a mission analog: a simulation of some conditions and demands of space exploration, not a journey to Mars. The crew’s work therefore offers NASA experience from a simulated long-duration mission rather than from a crewed flight to another planet.
Why NASA is studying mission analogs
Long-duration missions place demands on both equipment and the people operating it. NASA says insights from this crew’s experience will help it understand how crews adapt over time, and will contribute to designing a future Moon Base and planning missions to Mars.
The range of activities—from crop maintenance and resource management to communication delays—gave the crew experience with several practical challenges relevant to extended missions. NASA’s announcement describes the programme’s goals and the crew’s tasks, but does not report specific measurements or findings from this mission.