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When was Carl Sagan's death?

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Carl Sagan passed away on Dec. 20, 1996, at the age of 62 from pneumonia following a battle with myelodysplasia, or bone marrow cancer. An astronomer and astrophysicist by profession, Sagan was also known for his role as host of the Public Broadcasting Service series "Cosmos" in the 1980s.

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Sagan was born in 1934 in Brooklyn, N.Y., and he attended the University of Chicago, earning a master's degree in physics and a Ph.D. in both astrophysics and astronomy. He taught at both Harvard University and Cornell University, and he served as an adviser to NASA. He was instrumental in assembling the message that accompanied the space probe Pioneer 10, which launched in 1972. Sagan was an accomplished author, writing "Contact," a novel that prompted the movie adaptation in which Jodie Foster starred.

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