Crew from Nasa's simulated Mars mission emerges after 378 days in isolation

The four members of a crew who took part in a simulated mission to Mars have emerged after 378 days in isolation ​at the US space agency’s Johnson Space Centre in Houston, an endeavour designed to help prepare for a ‌possible future excursion by Nasa astronauts to Earth’s planetary neighbour. “It’s been a hell of a year — analogue astronauts living in captivity of our own free will,” Ellen Ellis, the medical officer on the Crew Health and Performance Exploration Analogue (Chapea) mission, said in remarks at Johnson Space Centre after ​emerging with her three crewmates on Saturday. The four…