The original 13-part Cosmos: A Personal Voyage first aired in 1980 on the Public Broadcasting Service, and was hosted by Carl Sagan. Cosmos has been critically praised, winning several television broadcasting awards and a Peabody Award for educational content.Ī sequel series, Cosmos: Possible Worlds, premiered on March 9, 2020, on National Geographic. The series concluded on June 8, 2014, with home media release of the entire series on June 10, 2014. The series has been rebroadcast internationally in dozens of other countries by local National Geographic and Fox stations. The remainder of the series aired on the Fox Network, with the National Geographic Channel rebroadcasting the episodes the next night with extra content.

The series premiered on March 9, 2014, simultaneously in the United States across ten 21st Century Fox networks. The series loosely follows the same thirteen-episode format and storytelling approach that the original Cosmos used, including elements such as the 'Ship of the Imagination' and the ' Cosmic Calendar', but features information updated since the 1980 series, along with extensive computer-generated graphics and animation footage augmenting the narration. The show is produced by Brannon Braga, and Alan Silvestri composed the backing score. Among the executive producers are Seth MacFarlane, whose financial investment was instrumental in bringing the show to broadcast television, and Ann Druyan, a co-author and co-creator of the original television series and Sagan's wife. The show is presented by astrophysicist Neil deGrasse Tyson, who, as a young high school student, was inspired by Sagan. This series was developed to bring back the foundation of science to network television at the height of other scientific-based television series and films. The show is a follow-up to the 1980 television series Cosmos: A Personal Voyage, which was presented by Carl Sagan on the Public Broadcasting Service and is considered a milestone for scientific documentaries. Cosmos: A Spacetime Odyssey is a 2014 American science documentary television series.

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