How do astronauts sleep on space station?
Description
Expedition 55/56 flight engineer Ricky Arnold explains how astronauts grab some shut eye aboard the International Space Station. -- How-tos in Space!: http://videos.space.com/m/rdSVVMs6/when-astronauts-have-to-go-bathrooms-in-space-explained-with-props?list=EoYEzhMC
Credit: NASA Johnson Space Center
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