Venus Greenhouse Effect
Sagan develops models showing that a strong greenhouse effect can explain the extremely high surface temperature of Venus.
Historical biography archive · Updated 2026-11-03
Carl Sagan Biography and Timeline
Follow Carl Sagan through 5 dated historical records for United States of America.
Carl Sagan, historical timeline
A chronological timeline drawn from matching World History Database records.
5Distinct records
1 of 1Page
1960–1990Years on this page
1960
1962
Venus Surface Temperature
Mariner 2 measurements confirm that Venus is extremely hot, supporting greenhouse models of the planet's climate.
1977
Golden Record Committee Leadership
Leads the committee selecting the images, sounds, music and messages carried on the Voyager Golden Record.
Role range: 1977-1977
1990
Pale Blue Dot
Persuades NASA to command Voyager 1 to photograph Earth from beyond Neptune.
Role range: 1990-1990
Solar System Family Portrait
Voyager 1 photographs a family portrait of the Solar System at Sagan's long-standing urging.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.