
The American astronomer Carl Sagan (1934-1996) was one of the best-known scientists of his time. A prolific writer and television personality, he was creator and host of Cosmos, an enormously popular television series that explained the wonders and intricacies of astronomy...

Astronomer, planetary scientist, astrophysicist, exobiologist, educator, public figure, skeptic--all these hats represent important parts of Carl Sagan's complex, multifaceted career. Perhaps best known as the host of the popular television series Cosmos, Sagan offered to the...