Knowra Carl Sagan Carl Sagan Carl Sagan (1934–1996) was an American astronomer, planetary scientist, and science communicator who helped popularize astronomy and co-created the television series Cosmos . He also advanced the search for extraterrestrial life and planetary exploration.
Ann Druyan : An American writer and producer who collaborated with Carl Sagan on Cosmos and other projects. Druyan co-created the original Cosmos and later produced its television successors.
Mariner 2 : The first spacecraft to conduct a successful planetary flyby, passing Venus in 1962. Sagan helped interpret Mariner 2 observations that showed Venus was intensely hot.
Planetary science : The study of planets, moons, planetary systems, and the physical processes that shape them. This field encompasses Sagan’s research on planetary atmospheres, surfaces, and habitability.
Public understanding of science : The ways people acquire, interpret, and use scientific knowledge in public life. Sagan made complex scientific ideas accessible through books, television, and public advocacy.
Pseudoscience : Claims presented as scientific that lack reliable methods of testing, evidence, or correction. Sagan repeatedly challenged pseudoscientific claims using skepticism and standards of evidence.
Frank Drake : An American astronomer who pioneered radio searches for extraterrestrial intelligence and formulated the Drake equation. Drake and Sagan shared scientific and public advocacy for searching for extraterrestrial intelligence.
Venera 7 : The Soviet spacecraft that made the first successful landing on Venus and transmitted data from its surface in 1970. Sagan used the Venus surface conditions measured by Venera 7 to discuss the planet’s extreme environment.
Astrobiology : The scientific study of life’s origin, evolution, distribution, and future in the universe. Sagan helped establish questions about life beyond Earth as subjects for scientific investigation.
Voyager Golden Record : A collection of sounds and images from Earth launched aboard the Voyager spacecraft in 1977. Sagan chaired the team that selected its contents as a message to possible extraterrestrial recipients.
Intelligent design : The claim that some features of life are best explained by an intelligent cause rather than natural processes. Sagan’s naturalistic explanations contrast with appeals to design that do not specify testable mechanisms.
Show all 27