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"Space Oddity" sung by David Bowie used to be cool, but now that an actual astronaut has gone ahead and sung it IN SPACE we've heard enough, Ziggy Stardust. Check out spaceman Chris Hadfield's incredible cover right here, then learn about the life-changing "pizza compass" and take sides in the Berlin vs. NYC debate.Watch an astronaut cover David Bowie on a real spaceshipApp of the week: Pizza compass7 places not to visit, according to movies