Back جون إم جرونسفيلد Arabic جون ام جرونسفيلد ARZ Джон Грунсфелд Bulgarian John Grunsfeld Czech John Grunsfeld Danish John Mace Grunsfeld German جان ام گرانسفلد Persian John Grunsfeld Finnish John Grunsfeld French John M. Grunsfeld Galician
John Grunsfeld | |
|---|---|
 Grunsfeld in 2000 | |
| Born | John Mace Grunsfeld October 10, 1958 |
| Education | Massachusetts Institute of Technology (BS) University of Chicago (MS, PhD) |
| Space career | |
| NASA astronaut | |
Time in space | 58d 15h 3m |
| Selection | NASA Group 14 (1992) |
Total EVAs | 8 |
Total EVA time | 58h 30m |
| Missions | STS-67 STS-81 STS-103 STS-109 STS-125 |
Mission insignia |      |
| Scientific career | |
| Fields | Physics |
| Thesis | The Energy Spectrum of the Iron Group Elements in the Cosmic Rays from 50-1000 GeV/amu (1988) |
March 4, 2002
John Mace Grunsfeld (born 10 October 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.[1] 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).[2] Grunsfeld announced his retirement from NASA in April 2016.[3]
- ^ "NASA Leadership: John M. Grunsfeld, Associate Administrator for the Science Mission Directorate". NASA. January 2012.
- ^ David Weaver (December 19, 2011). "Physicist and Former Astronaut John Grunsfeld to Head NASA Science Directorate". NASA.
- ^ Karen Northon (April 5, 2016). "John Grunsfeld Announces Retirement from NASA". NASA.
© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search