US astronaut. Her three space shuttle flights include the Discovery mission in April 1990 to deploy the Hubble Space Telescope. In 1984 she was the first US woman to make a space walk. She logged more than 532 hours in space. Sullivan was selected as an astronaut in 1978 and left NASA in 1992 to become the chief scientist at the National Oceanic and Atmospheric Administration.
Subjects: Astronomy and Astrophysics.