How Old Is John M. Grunsfeld? John M. Grunsfeld Birthday
John M. Grunsfeld was born on October 10, 1958 and is 65 years old now.
Birthday: October 10, 1958
How Old - Age: 65
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John M. Grunsfeld - Biography
John Mace Grunsfeld (born October 10, 1958) is an American physicist and a former NASA astronaut. He is a veteran of five Space Shuttle flights and has served as NASA Chief Scientist. His academic background includes research in high energy astrophysics, cosmic ray physics and the emerging field of exoplanet studies with specific interest in future astronomical instrumentation. After retiring from NASA in 2009, he served as the Deputy Director of the Space Telescope Science Institute in Baltimore, Maryland. In January 2012, he returned to NASA and is currently serving as associate administrator of NASA's Science Mission Directorate (SMD).
