Carl Sagan

Born: 11/9/1934
Birthplace: Brooklyn, New York

America's most famous astronomer, who specialized in exobiology, the field of biology that investigates extraterrestrial life, wrote more than 20 books, including the Pulitzer Prize-winning Dragons of Eden, Intelligent Life in the Universe, and Mars and the Mind of Man. His 1980 PBS series, Cosmos, remains the most-watched program in public-television history.

Died: 12/20/1996
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