The astronomer Carl Sagan
The astronomer Carl Sagan

University of Mount Union · CC BY 2.0 · Source

Person1934 – 1996

Carl Sagan

American astronomer and writer who led the making of the Voyager Golden Record and persuaded NASA to turn Voyager 1 around in 1990 to photograph the Earth from six billion kilometres — the Pale Blue Dot. Author of Cosmos

Where they went

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3 related events

  1. 1

    Voyager 2 left Cape Canaveral on 20 August 1977 and Voyager 1 on 5 September, each on a Titan IIIE-Centaur rocket and each carrying the Golden Record, a disc of the sounds and pictures of Earth.

  2. 1977Voyager programparticipant

    Launched by the United States in 1977, the uncrewed probes Voyager 1 and 2 flew past Jupiter, Saturn, Uranus and Neptune, giving the first close looks at them, then crossed the edge of the solar wind into interstellar space. Nearly fifty years on they still talk to Earth.

  3. 2
    1990Pale Blue Dotkey figure

    On 14 February 1990 Voyager 1, six billion kilometres out, turned its camera back and photographed the planets. In one frame the Earth was a single dot in a shaft of sunlight. Carl Sagan called it the Pale Blue Dot.

People who appear alongside

  • Edward Stone1936 – 2024

    American physicist, project scientist of the Voyager mission for fifty years (1972–2022) and director of the Jet Propulsion Laboratory (1991–2001)

  • Gary Flandro

    American aerospace engineer who, as a summer researcher at JPL in 1965, worked out that in the late 1970s the four outer planets would line up so that one spacecraft could visit them in turn — the Grand Tour

Themes this person appears in

  • Space Exploration1957 – 2012

    From Sputnik, the first artificial satellite, to Apollo 11’s first landing on the Moon, Apollo 13’s return from behind it and the Voyagers, which passed the outer planets and went on into interstellar space — the paths of the people and probes that left the Earth