Carl Edward Sagan (November 9, 1934 – December 20, 1996) was an American astronomer, astrobiologist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (Seti). He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series Cosmos: A Personal Voyage, which has been watched by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history.

Read more about Carl Sagan on Last.fm.


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