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Historical person

Carl Sagan Biography

Historical biography and chronological timeline for Carl Sagan, based on 5 World History Database records associated with United States of America.

5 records1960–19905 events3 places

Chronological biography

1960

Venus Greenhouse Effect1960
Science / Astronomy

Sagan develops models showing that a strong greenhouse effect can explain the extremely high surface temperature of Venus.

1962

Venus Surface Temperature14 December 1962
Science / Astronomy · Venus

Mariner 2 measurements confirm that Venus is extremely hot, supporting greenhouse models of the planet's climate.

1977

Golden Record Committee Leadership1977
Science / Astronomy · Astronomer · Ithaca

Leads the committee selecting the images, sounds, music and messages carried on the Voyager Golden Record.

1990

Pale Blue Dot14 February 1990
Science / Astronomy · Astronomer · Solar System

Persuades NASA to command Voyager 1 to photograph Earth from beyond Neptune.

Solar System Family Portrait14 February 1990
Science / Astronomy · Astronomer · Solar System

Voyager 1 photographs a family portrait of the Solar System at Sagan's long-standing urging.

Titles and roles

Astronomer

Record provenance

This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.