Robert A. Parker
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. Provided by Wikipedia
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