Portrait of Brian Duffy Courtesy of NASA

Brian Duffy is an American astronaut who was born on June 20, 1953, in Massachusetts. Before he became an astronaut, Duffy was a test pilot for the Air Force. He has flown over 4000 hours in 25 different aircraft.

Duffy became an astronaut in 1986. He has spent over 667 hours in space on three spaceflights.

Duffy made his first spaceflight in 1992 aboard STS-45. The crew studied the Earth and the Sun during this mission. In 1993, he flew aboard STS-57. The crew conducted several experiments on materials and life science research. Duffy commanded STS-72 in 1996.