Carl Sagan (1934-1996)
American astronomer, astrophysicist, cosmologist, author and popularizer of natural and space science
CARL SAGAN was the David Duncan Professor of Astronomy and Space Sciences and Director of the Laboratory for Planetary Studies at Cornell University. He played a leading role in the American space program since its inception. He was a consultant and adviser to NASA since the 1950’s, briefed the Apollo astronauts before their flights to the Moon, and was an experimenter on theMariner, Viking, Voyager, and Galileoexpeditions to the planets. He helped solve the mysteries of the high temperatures of Venus (answer: massive greenhouse effect), the seasonal changes on Mars (answer: windblown dust), and the reddish haze of Titan (answer: complex organic molecules). MORE [The Carl Sagan Portal.
Video posted to YouTube by CarlSaganPortal.
Earth as seen from Apollo 17.
“A mote of dust suspended in a sunbeam . . . ” Carl Sagan
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Carl Sagan portrait courtesy of the Carl Sagan Planetary Society and in the Public Domain; Earth photo courtesy of NASA
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