NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Sleeping on the International Space Station. Lisa M. Nowak, STS-121 mission specialist, sleeping in her sleeping bag. The sleeping bag is attached to the lockers on the middeck of the Space Shuttle Discovery, while docked at the International Space Station (ISS). The ISS is a joint effort by several national space agencies, including NASA. It orbits Earth at an altitude of around 350 kilometres. Photographed on 8th July, 2006.
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