John M. Grunsfeld, Date of Birth, Place of Birth

John M. Grunsfeld

American astronaut and astronomer

Date of Birth: 10-Oct-1958

Place of Birth: Chicago, Illinois, United States

Profession: astronomer, astronaut, physicist, mountaineer

Nationality: United States

Zodiac Sign: Libra

Social Profiles:

SciAstro

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