Locked away for 520 days
The all-male crew of three Russians, a Frenchman, an Italian-Colombian and a Chinese won’t endure weightlessness, but they will live for 520 days in the spartan conditions of a mock spaceship and follow a harsh regimen of experiments and exercise.
The main task of the Mars-500 experiment is to study the effects of long isolation to help a future space crew cope better with stress and fatigue.