NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
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Astronaut Kathryn D. Sullivan (born 1951) joins with other crew members prior to a training session in the space shuttle mock-up and integration laboratory at the Johnson Space Center, 2 September 1984. Sullivan, an American geologist and crew member on three Space Shuttle missions, was the first woman to perform extravehicular activity (EVA) during Space Shuttle Challenger mission STS-41-G on October 11, 1984. She and mission specialist David Leestma performed a 3.5-hour space walk in which they operated a system designed to show that a satellite could be refuelled in orbit.
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