Four people who've spent more than a year pretending to live on Mars are coming back to Earth, without ever leaving Houston. NASA's second CHAPEA crew was set to walk out of its 3D printed habitat at the Johnson Space Center on Saturday afternoon, US time, after 378 days sealed inside.

The CHAPEA Mars Dune Alpha habitat at NASA Johnson Space Center, a 2022 file photo. Photo: NASA / Bill Stafford, public domain