Which astronaut observing a birthday today has flown on all five of the space capable Space Shuttles (Challenger, Discovery, Atlantis, Endeavor, and Columbia)? Answer below the cut.

Story Musgrave flew on six shuttle missions (two on Challenger) making him the second astronaut with as many spaceflights.


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Also observing a birthday today is NASA Administrator Charles Bolden, who also racked up several frequent flier miles as an astronaut on four shuttle missions.