He earned a master's degree in Physics in 1956, also from the University of Chicago.
He received his Bachelor's degree in Physics from the University of Chicago in 1955.
He won the 1978 Pulitzer Prize for his book "The Dragons of Eden" (1977).
Carl Sagan's book Cosmos, which accompanied the TV series, was on the New York Times bestseller list for 70 weeks. It was the best-selling science book ever published in English.
Carl Sagan's show Cosmos was the most watched series in public-television history. It was seen by more than 500 million people in 60 countries.
He died on Dec. 20, 1996, at the age of 62, in Seattle, Washington. He had been seeking treatment for myelodysplasia at the Fred Hutchinson Cancer Research Center there.
His official titles at Cornell University were the David Duncan Professor of Astronomy and Space Sciences and the director of the Laboratory for Planetary Studies at Cornell University.
He remained a full professor at Cornell University between 1971 and 1996, the year of his death.
He began teaching at Cornell University in 1968, becoming a full professor in 1971.
He taught at Harvard University until 1968.
He wrote the novel Contact, that was made into a movie staring Jodie Foster and directed by Robert Zemeckis in 1997.
Carl Sagan: The fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.
Carl Sagan: We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
Carl Sagan: Extraordinary claims require extraordinary evidence.
Carl Sagan: I don't want to believe. I want to know.
Carl Sagan: To make an apple pie from scratch, you must first invent the universe.
Carl Sagan: The Cosmos is all that is, or ever was, or ever will be.