NASA astronaut Robert Satcher
has left the agency to pursue an outside career. Satcher's last day with NASA was Sept. 9.
"Bobby is an exceptionally talented individual," said Peggy Whitson, chief of the Astronaut Office. "His medical skills coupled with his engineering expertise were a valuable contribution to our team."
Satcher holds a doctorate in chemical engineering from the Massachusetts Institute of Technology, as well as a doctorate of medicine from Harvard Medical School. He served as a mission specialist on STS-129 in 2009 and completed two spacewalks during the flight.