NASA's 1st year-long mock Mars mission wraps up in Houston

Four people in black flight suits stand in front of a microphone, with the nasa logo in the background.

NASA's first year-long mock Mars mission has come to an end.

That mission, the first in the CHAPEA ("Crew Health and Performance Exploration Analog") series, began on June 25, 2003, when four volunteers were sealed inside a simulated Mars habitat at NASA's Johnson Space Center (JSC) in Houston.