A team of six volunteers have completed a Mars simulation in a dome on top of a volcano in Hawaii, where they lived in isolation for a year.
Since 29 August 2015, the group lived in the dome, wearing space-suit when outside, without fresh food, fresh air, or privacy.
To prepare for a potential mission in the 2030s, researchers wanted to study the effects of a potential mission on the human mind and it was a success given what the crew members said.