This is how astronauts sleep in zero gravity pic.twitter.com/2h1TOqOyWs— Universal-Sci (@universal_sci) February 14, 2019 …
This is how astronauts sleep in zero gravity pic.twitter.com/2h1TOqOyWs
— Universal-Sci (@universal_sci) February 14, 2019
(via http://twitter.com/universal_sci/status/1096182735499132931)