John Grunsfeld, born October 10, 1958 in Chicago, Illinois, is a veteran of five space shuttle flights.
His first mission was aboard Endeavour (STS-67) as mission specialist in March 1995. The mission carried an experiment sponsored by the Australian Space Office.
His second mission was aboard Atlantis (STS-81) as mission specialist in January 1997 to the space station Mir. During the mission, Grunsfeld made a call to the NPR show Car Talk, which was hosted by two fellow graduates of MIT.
His third flight was aboard Discovery (STS-103) as mission specialist in December 1999. It was a servicing mission to the Hubble Space Telescope. Grunsfeld conducted two EVAs with fellow astronaut Steven Smith.
His fourth mission was aboard Columbia (STS-109) as mission specialist in March 2002. It was another (the fourth) servicing mission to the Hubble Space Telescope. Grunsfeld conducted three EVAs with fellow astronaut Richard Linnehan.
His fifth and final mission was aboard Atlantis (STS-125) as mission specialist in May 2009. It was the fifth and final servicing mission to the Hubble Space Telescope. Grunsfeld conducted three EVAs with fellow astronaut Andrew Feustel.
His total EVA time is 58 hours, 30 minutes. His time in space is 58 days, 15 hours, 3 minutes.
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