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Mary Cleave, First Female Astronaut To Fly After Challenger Explosion, Dies At 76

  • Retired astronaut Mary Cleave, the first woman to crew a spaceflight after the shocking Challenger explosion of 1986, died on Monday, NASA announced. She was 76.
  • A cause of death was not immediately released.
  • Cleave, a scientist with training in civil and environmental engineering, was the first woman to serve as an associate administrator for NASA’s Science Mission Directorate.
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