NASA/JPL · Public domain（via Wikimedia Commons）
Carl Sagan
Carl Edward Sagan was an American astronomer, planetary scientist, science fiction novelist and popular science writer, and the founder of the Planetary Society. Sagan collected the first physical messages sent into space: the Voyager's Golden Record. Sagan proposed the still accepted hypothesis that the high temperature on the surface of Venus is due to the greenhouse effect.
- Category
- Scientists
- Nationality
- United States
- Born
- 1934-11-09
- Died
- 1996-12-20
- Wikidata
- Q410
