Science and Space Share Read Later prev5 of 4nextView AllScience and SpaceBy TIME Staff Dec. 04, 2013NASA / ReutersCanadian astronaut and International Space Station (ISS) Commander Chris Hadfield performs his zero-gravity version of David Bowie's hit "Space Oddity" in this image taken from video. Full List Science and SpaceTop 10 Space MomentsTop 10 New SpeciesTop 10 Green Stories