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Carl sagan tiny blue dot5/25/2023 ![]() However, he also admits that the scientific tools to prove the Earth orbited the Sun were (until the last few hundred years) not accurate enough to measure effects such as parallax, making it difficult for astronomers to prove that the geocentric theory was false. Sagan proposes two reasons for the persistence of the idea of a geocentric, or Earth-centered universe: human pride in our existence, and the threat of torturing those who dissented from it, particularly during the time of the Roman Inquisition. The first part of the book examines the claims made throughout history that Earth and the human species are unique. ![]() In 2023, the audiobook of Pale Blue Dot, read by Sagan, was selected by the Library of Congress for preservation in the United States National Recording Registry as being "culturally, historically, or aesthetically significant." Summary ![]() He also details a human vision for the future. In the book, Sagan mixes philosophy about the human place in the universe with a description of the current knowledge about the Solar System. It is the sequel to Sagan's 1980 book Cosmos and was inspired by the famous 1990 Pale Blue Dot photograph, for which Sagan provides a poignant description. Pale Blue Dot: A Vision of the Human Future in Space is a 1994 book by the astronomer Carl Sagan. ![]()
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