FAQ About Carl Sagan

Pale Blue Dot: A Vision of the Human Future in Space is a book written by Carl Sagan which explores humanity's place in the universe and argues for the continuation of space exploration. The title refers to the famous photograph of Earth taken by the Voyager 1 spacecraft from a distance of about 3.7 billion miles, which Sagan uses to reflect on the fragility and insignificance of Earth in the vast cosmos.