found: His Physical studies of planets, 1960.
found: Washington post, 21 December 1996, p. A 12(died at age 62; astronomer; at age 25, doctoral thesis, Physical studies of planets)
found: Carl Sagan's cosmic connection, 2000:CIP t.p. (Carl Sagan) pub. info. (Carl Edward Sagan; b. Nov. 9, 1934; d. Dec. 20, 1996)
found: Wikipedia, September 8, 2015(Carl Sagan; Carl Edward Sagan (November 9, 1934-December 20, 1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences; born Brooklyn, New York; died Seattle, Washington; spent most of his career as a professor of astronomy at Cornell University, where he directed the Laboratory for Planetary Studies)
found: Encyclopædia Britannica online, January 17, 2020(Carl Sagan, in full Carl Edward Sagan, (born November 9, 1934, Brooklyn, New York, U.S.--died December 20, 1996, Seattle, Washington), American astronomer and science writer; attended the University of Chicago, where he earned a bachelor's and a master's degree in physics in 1955 and 1956, respectively, and a doctorate in astronomy and astrophysics in 1960. From 1960 to 1962 he was a fellow in astronomy at the University of California, Berkeley, and from 1962 to 1968 he worked at Harvard University and the Smithsonian Astrophysical Observatory; in 1968 he became the director of Cornell University's Laboratory for Planetary Studies; although Sagan did important research on planetary atmospheres, in astrobiology, and on the origin of life on Earth, he made his reputation primarily as a spokesman for science and a popularizer of astronomy; in 1980 cofounded the Planetary Society; wrote the television series Cosmos with his wife Ann Druyan; author of science-fiction novel Contact (1985))
