A science teacher was then recruited, and Seddon began studying science in the seventh grade. Rose did not teach science until the Sputnik crisis made it a national priority. She grew up in Murfreesboro, where she attended St. Seddon was named after her maternal grandmother, and known by her middle name, Rhea, which is pronounced "ray". Seddon, a lawyer, and his wife Clayton Ransom née Dann. Margaret Rhea Seddon was born in Murfreesboro, Tennessee, on November 8, 1947, the first child of Edward C. She retired from NASA in November 1997 and became Chief Medical Officer of the Vanderbilt Medical Group. In 1996, she was detailed by NASA to Vanderbilt University Medical School in Nashville, Tennessee, where she assisted in the preparation of cardiovascular experiments that flew on the STS-90 Neurolab Spacelab flight in April 1998. She served as a member of NASA's Aerospace Medical Advisory Committee, a Technical Assistant to the Director of Flight Crew Operations, and a Capsule Communicator (CAPCOM) in the Mission Control Center. She was a rescue helicopter physician for the early Space Shuttle flights and support crew member for STS-6. At NASA her development work included the Space Shuttle Orbiter and payload software, the Shuttle Avionics Integration Laboratory, the Flight Data File, the Space Shuttle medical kit and checklists for launch and landing. ![]() Seddon became an astronaut in August 1979 after selection as a candidate the year prior. Before, during and after her career in the astronaut program, she was active in emergency departments in Tennessee, Mississippi and Texas. During her residency with the University of Tennessee hospitals, she was the only woman in the General Surgery Residency Program. ![]() On these flights, she built repair tools for a US Navy satellite and performed medical experiments.Ī graduate of the University of California, Berkeley, and the University of Tennessee College of Medicine, Seddon was awarded her doctor of medicine (MD) degree in 1973. After being selected as part of the first group of astronauts to include women in 1978, she flew on three Space Shuttle flights: as mission specialist on STS-51-D and STS-40, and as payload commander for STS-58, accumulating over 722 hours in space. ![]() Margaret Rhea Seddon (born November 8, 1947) is an American surgeon and retired NASA astronaut.
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