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Spaceman: Mark Massimino's First Spacewalk
As Mark Massimino shuttled through space to the Hubble Telescope, 350 miles above Earth, our planet looked like "a gigantic, bright blue marble set against the blackness of space...Everything had a clarity and a crispness to it. It was like I was seeing things in their purest form, like I was seeing true color for the first time." Read this riveting excerpt from his book, 'Spaceman'.
