Six NASA recruits have begun a year-long simulation of life on Mars, living under a dome near a volcano in Hawaii.
A German physicist, a French astrobiologist and four Americans – a pilot, a journalist, an architect and a soil scientist – will go 365 days without fresh food or fresh air.
Any journeys outside the dome will require them to wear a space suit. There’ll be little privacy with the done measuring just 11 metres in diameter and 6 metres in height.
The experience is designed to explore how humans will respond to the isolation of a mission to Mars – scientists estimate the trip will take between one and three years.
Researchers will monitor the six team members through cameras and body movement trackers.
NASA Investigator Kim Binsted said, "I think one of the lessons is that you really cant prevent personal conflicts. It is going to happen over these long-duration missions, een with the very best people."