Pale Blue Dot: A Vision of the Human Future in Space is a 1994 book by the astronomer Carl Sagan. 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. In the book, Sagan mixes philosophy about the human place in the universe with a description of the current knowledge about the Solar System. He also details a human vision for the future.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." Source: Wikipedia (en)