John M. Grunsfeld

Flights count launches with a definitive outcome — the same basis as the Stats page.

John Mace Grunsfeld 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 served as associate administrator of NASA's Science Mission Directorate (SMD). Grunsfeld announced his retirement from NASA in April 2016.

Biography from Launch Library 2.

• Space Shuttle Atlantis / OV-104 | STS-125Mission Specialist · SuccessMay 11, 2009
• Space Shuttle Columbia / OV-102 | STS-109Mission Specialist · SuccessMarch 1, 2002
• Space Shuttle Discovery / OV-103 | STS-103Mission Specialist · SuccessDecember 20, 1999
• Space Shuttle Atlantis / OV-104 | STS-81Mission Specialist · SuccessJanuary 12, 1997
• Space Shuttle Endeavour / OV-105 | STS-67Mission Specialist · SuccessMarch 2, 1995

• STS-125 EVA 57h 2m2009-05-18
• STS-125 EVA 36h 36m2009-05-16
• STS-125 EVA 17h 20m2009-05-14
• STS-109 EVA 57h 20m2002-03-08
• STS-109 EVA 36h 48m2002-03-06
• STS-109 EVA 17h 1m2002-03-04
• STS-103 EVA 38h 8m1999-12-24
• STS-103 EVA 18h 15m1999-12-22