Carl Sagan did more to popularize science than any man on the planet, sharing his wonder and fascination with the mysteries of the universe with millions. He was the rarest of all creatures: the celebrity scientist. While some accused him of being a grandstander, none can deny that his approach to science helped introduce millions of people to the great wonders of the universe that fascinated him all his life. Carl Sagan played many roles: professor, working scientist, bestselling author and TV personality. In his classic television series, he brought science to the masses in an accessible, entertaining format. But he also performed groundbreaking research in astronomy, and was willing to risk his reputation to investigate the possibility of extraterrestrial life. Explore the remarkable life of this visionary scientist from his childhood to his death from bone marrow disease at 62.