Mike Massimino served as a NASA Astronaut from 1996 until 2014 and flew in space twice: STS-109 on space shuttle Columbia in March 2002 and STS-125 on space shuttle Atlantis in May 2009 – the final two Hubble Space Telescope servicing missions. He is the author of Moonshot: A NASA Astronaut’s Guide to Achieving the Impossible. 

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