Portrait of American astronomer and author Carl Sagan leaning his elbows on his knees and smiling in a laboratory at Cornell University, Ithaca, New...
Astrophysicist Carl Sagan poses before a Florida State University Distinguished Lecture Series speech at the Turnbull Conference Center in circa 1984...
Astronomer Carl Sagan Speaks at a news conference where NASA made available the last pictures taken by Voyager 1, which show the solar system as...
Portrait of American astronomer and author Carl Sagan holding a globe model of the planet Mars, 1970s.
American astronomer and author Carl Sagan sitting at a desk in front of bookcases at Cornell University, Ithaca, New York. He is wearing a turtleneck...
Portrait of American astronomer and author Carl Sagan holding a globe in front of bookcases at Cornell University, Ithaca, New York. He is wearing a...
Cosmologist and author Carl Sagan and his wife author Ann Druyan pose in the Turnbull Conference Center on the campus of Florida State University in...
Pulitzer Prize Winner, Carl Sagan, United States Astronomer, author and popularizer of science. Wrote The Dragons of Eden: Speculations of the...
Professor Carl Sagan of Cornell University at the meeting with Centers for Disease Control employees, Harold W Jaffe and W Meade Morgan, 1988. Image...
Astronomer Dr. Carl Sagen taking part in a demonstration against the first US nuclear explosion of year.
Astronomer Dr. Carl Sagan and Representative Patricia Shroeder taking part in a demonstration against the first US nuclear explosion of the year.
Washington: Dr. Carl Sagan testifies before a joint House subcommittee hearing on the impact of a "nuclear winter." Sagan criticized the Defense...
Astronomer Carl Sagan at NASA's Jet Propulsion Laboratory during Voyager 2's encounter with Neptune's moon Triton. | Location: near Pasadena,...
Voyager 2 scientists Carl Sagan and Ed Stone look at images that Voyager made of Neptune's moon Triton.
Hugh Downs and Carl Sagan for Walt Disney Television via Getty Images's "20/20", 6/29/78 on the Walt Disney Television via Getty Images Television...
Author Carl Sagan attends Third Annual Better World Society Gala on November 28, 1988 at the Waldorf Hotel in New York City.
Author Carl Sagan attends Third Annual Better World Society Gala on November 28, 1988 at the Waldorf Hotel in New York City.
Author Carl Sagan attends Third Annual Better World Society Gala on November 28, 1988 at the Waldorf Hotel in New York City.
Democratic presidential candidate Gary Hart speaks during a rally. Standing with him is astronomer Carl Sagan.
Scientist and anti-nuclear weapon advocate Carl Sagan speaks at the Great Peace March in Washington, D.C., 1986.
Writer, producer and director Seth MacFarlane attends a Celebration Of Carl Sagan at The Library of Congress on November 12, 2013 in Washington, DC.
Author Carl Sagan attends Third Annual Better World Society Gala on November 28, 1988 at the Waldorf Hotel in New York City.
Author Carl Sagan attends Third Annual Better World Society Gala on November 28, 1988 at the Waldorf Hotel in New York City.
Picture dated 07 December 1995 shows Daniel Goldin, NASA Administrator and Inter Disciplinary Scientist Carl Sagan giving each other a "high five" at...
Daniel Goldin, NASA Administrator and Inter Disciplinary Scientist Carl Sagan give each other a "high five" 07 December at JPL following the...
Pictured: "StarTalk"'s Neil deGrasse Tyson, Director of the Hayden Planetarium in New York City, in an interview on October 23, 2015 --
More than three decades after Carl Sagan's groundbreaking and iconic series, "Cosmos: A Personal Voyage," it's time once again to set sail for the...
More than three decades after the debut of "Cosmos: A Personal Voyage" Carl Sagan's stunning and iconic exploration of the universe as revealed by...
Author Carl Sagan attends Third Annual Better World Society Gala on November 28, 1988 at the Waldorf Hotel in New York City.
Author Carl Sagan attends Third Annual Better World Society Gala on November 28, 1988 at the Waldorf Hotel in New York City.
