# NASA CHAPEA 2 Mars simulation mission

> Developing situation record from CLSTR: https://clstr.news/situations/nasa-chapea-2-mars-simulation-mission
> Updated: 2026-11-02T11:55:18.000Z. Sources: 45. Developments: 2.

NASA has concluded its second Crew Health and Performance Exploration Analog (CHAPEA) mission, a 378-day simulation of a Mars mission conducted at the Johnson Space Center in Houston, Texas. Four volunteers, including commander Ross Elder, medical officer Ellen Ellis, science officer Matthew Montgomery, and flight engineer James Spicer, lived within the Mars Dune Alpha, a 160-square-meter 3D-printed habitat.

The mission, which began on October 19, 2025, aimed to study the effects of isolation, confinement, and limited resources on human health and productivity. To replicate interplanetary conditions, the crew managed significant communication delays ranging from 22 to 44 minutes and experienced a two-week communications blackout. During the simulation, the crew performed tasks such as growing crops in simulated Martian soil, conducting medical assessments, maintaining habitat systems, and performing simulated spacewalks.

Following their release from isolation, the crew members will participate in two weeks of evaluations and debriefings with scientists to share their findings. NASA intends to use the gathered data regarding physical and behavioral health and resource management to support the Artemis program and prepare for human missions to Mars targeted for the 2030s. The agency also plans to launch the Moon and Mars Exploration Analog (MMEA) program in August 2027.

## Claims

- China plans to launch its first crewed mission to the Moon before 2030. (reported by 9 sources)
- The mission architecture relies on two Long March-10 rockets and orbital rendezvous. (reported by 8 sources)
- The mission uses the Lanyue lunar lander and the Mengzhou crew spacecraft. (reported by 8 sources)
- The mission will involve a crew of three astronauts. (reported by 3 sources)
- Two astronauts will land on the Moon while one remains in lunar orbit. (reported by 3 sources)
- The Mengzhou spacecraft will be tested via transport missions to the Tiangong space station. (reported by 3 sources)
- The Mengzhou and Lanyue vehicles are scheduled for separate tests in 2027. (reported by 2 sources)
- A 26-ton lander mockup underwent simulated lunar gravity tests in August 2025. (reported by 1 source)

## Timeline

### 2026-11-02: NASA completes 378-day Mars mission simulation

Four volunteers completed a 378-day NASA simulation of a Mars mission at the Johnson Space Center, testing the effects of isolation and resource management for future interplanetary travel.

7 sources. https://clstr.news/cluster/nasa-crew-completes-378-day-mars-simulation-mission-1

### 2026-10-30: NASA CHAPEA 2 crew completes 378-day Mars simulation

Four volunteers have completed a 378-day NASA Mars simulation in Houston, testing human adaptation to isolation and confinement in a 3D-printed habitat to prepare for future deep-space missions.

38 sources. https://clstr.news/cluster/nasa-crew-completes-378-day-mars-simulation-mission

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Cite as: NASA CHAPEA 2 Mars simulation mission. CLSTR, https://clstr.news/situations/nasa-chapea-2-mars-simulation-mission