Robert Allan Ridley Parker (born December 14, 1936) is an American physicist and astronomer, former director of the NASA Management Office at the Jet Propulsion Laboratory, and a retired NASA astronaut. He was a mission specialist on two Space Shuttle missions, STS-9 and STS-35.
He has logged over 3,500 hours flying time in jet aircraft and 463 hours in space. Prior to his selection for astronaut training, Parker was an associate professor of astronomy at the University of Wisconsin–Madison.
NASA career
thumb|left|200px|Parker points instruments on ASTRO-1 on Columbias aft flight deck during STS-35
Parker was selected as a scientist-astronaut by NASA in August 1967. He was a member of the Astronaut Support Crews for the Apollo 15 and 17 missions, and was the person to whom the final words spoken by a man standing on the surface of the Moon (Gene Cernan) were addressed. Later, he served as program scientist for the Skylab Program Director's Office during the three crewed Skylab flights.
Post-NASA career
Parker was director of the Division of Policy and Plans for the Office of Space Flight at NASA Headquarters from January 1991 to December 1991. From January 1992 to November 1993, he was director of the Spacelab and Operations Program. From December 1993 to August 1997 he was manager of the Space Operations Utilization Program. In August 1997, Parker was named director of the NASA Management Office at the Jet Propulsion Laboratory in Pasadena, California. Parker retired from NASA on August 31, 2005.