Sagan, Carl Edward

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Sagan, Carl Edward

(sā`gən), 1934–96, American astronomer and popularizer of science, b. New York City. Early in his career he investigated radio emissions from Venus and concluded that the cause was a surface temperature of c.900°F; (500°C;) and crushing atmospheric pressure. He also studied color variations on Mars' surface, concluding that they were not seasonal changes as most believed but shifts in surface dust caused by windstorms. Both conclusions were substantially confirmed years later by space probes. Sagan is best known, however, for his research on the possibilities of extraterrestrial life (see exobiologyexobiology
or astrobiology,
search for extraterrestrial life within the solar system and throughout the universe. Philosophical speculation that there might be other worlds similar to ours dates back to the ancient Chinese and Greeks.
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), including experimental demonstration of the production of amino acids from basic chemicals by radiation. A professor of astronomy and space sciences at Cornell after 1968, he was involved with numerous NASA planetary space probes and was the creator and host of the 1980 public television science series Cosmos. His publications include The Dragons of Eden (1977; Pulitzer); a novel, Contact (1985); with Richard Turco, A Path Where No Man Thought (1990), on nuclear winternuclear winter,
theory holding that the smoke and dust produced by a large nuclear war would result in a prolonged period of cold on the earth. The earliest version of the theory, which was put forward in the early 1980s in the so-called TTAPS report (named for last initials of
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; with Ann Druyan, Shadows of Forgotten Ancestors (1992); Pale Blue Dot (1994); and The Demon-Haunted World (1995).

Bibliography

See biographies by K. Davidson (1999) and W. Poundstone (1999).

Sagan, Carl Edward

(1934–  ) astronomer, author; born in New York City. He began teaching at Harvard University (1962–68) while also working as an astrophysicist at the Smithsonian Observatory (1962–68). At Cornell University from 1970, his enthusiasm for space science and the possibility of intelligent life elsewhere in the universe stimulated the public's interest through such works as the television series Cosmos (1977) and books like the Cosmic Connection (1973) and (with Ann Druyen), Shadows of Forgotten Ancestors (1992).
References in periodicals archive ?
It doesn't tell you anything about the civilization, but it tells you a civilization is there," said Frank Drake, who with Carl Sagan sent the first physical message into space in 1972, the Pioneer plaques on board the Pioneer 10 U.
Cornell announced Saturday that the Carl Sagan Institute will honor the famous astronomer who taught there for three decades.
Contractor address : Poligono Industrial [beaucoup moins que]Salinas de Poniente[beaucoup plus grand que], c/ Carl Sagan, s/n
BORN URI Geller, Israeli psychic, 1946, above LUCY Pinder, British model, 1983 PETER Criss, US rock drummer, 1945 DIED JOHN Steinbeck, US author, 1968 CARL Sagan, American astronomer, 1996, above BOBBY Darin, US pop singer, 1973
The trio touch on everything from the moon landings to Patrick Moore, from Carl Sagan to Blake's Seven, as they show how, for as long as there has been video technology, there have been people eager to use it in the name of science.
Carl Sagan, is the science advisor for Parallel Man.
If you wish to make an apple pie from scratch," said Carl Sagan, "you must first invent the universe.
But N*E*R*D* frontman and producer Pharrell Williams - famous for his usual rider of SpongeBob SquarePants toys and sweets - this weekend insisted on a framed portrait of the late astronomer Carl Sagan.
The singer is a huge fan of Carl Sagan and respect outer space but would not ever go there, is close friends with composer Hans Zimmer who is also his mentor and has also revealed that Lauryn Hill was the one who gave him the idea to name his multimedia creative venture "i am OTHER.
Dorion Sagan, son of famous science communicator Carl Sagan, offers this reflection on the wonder of science in everyday existence, enhanced by humanistic and philosophical references.
Carl Sagan Gormley's men stand uniform, backs to the shore.
The sequel will follow a thirteen part format similar to "Cosmos: A Personal Voyage," originally hosted by the famous late American astrophysicist, cosmologist and astronomer, Carl Sagan.