Just like real astronauts, the participants were asked to complete a simulated space mission.

就像真正的宇航员一样，参与者需要完成模拟太空任务。

To find out, six volunteers spent a record 520 days confined to a simulated space habitat near Moscow. They emerged in 2011.

为了找到答案，六名志愿者创了历史纪录，花了520天待在墨西哥附近的模拟太空环境里。