Carl Sagan
(1934-1996)
American astrophysicist, cosmologist and author
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Carl Edward Sagan (SAY-gən; November 9, 1934 – December 20, 1996) was an American astronomer, planetary scientist and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by exposure to light. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which are universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect.
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| Born |
Carl Edward Sagan 9 November 1934 Brooklyn, New York, USA
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| Died |
20 December 1996 (aged 62) Seattle, Washington, USA
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| Zodiac | Scorpio |
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