Sagan’s contributions to planetary science were equaled only by his capacity to spread an infectious joy of the marvel and immensity of space. His 1980 book Cosmos became the best-selling ...

Carl Sagan hosted and co-wrote ‘Cosmos,’ a 13-part TV series that aired on PBS stations from 1980 to 1981. Mickey Adair/Michael Ochs Archives/Hulton Archive via Getty Images Sagan proposed a ...

Catch all 13 episodes of the original Cosmos before the new series premier on Sunday, 8PM.

Carl Sagan is Director, Laboratory for Planetary Studies, Cornell University, and, since 1970, a member of the Voy­ager Imaging Science Team. His Cosmos: A Special Edition is televised this fall.

What Carl Sagan Understood About Human Cruelty An infrequent astronomical event offers a new way of processing the unthinkable.

Carl Sagan hosted and co-wrote ‘Cosmos,’ a 13-part TV series that aired on PBS stations from 1980 to 1981. Mickey Adair/Michael Ochs Archives/Hulton Archive via Getty Images Sagan proposed a ...