Carl Sagan

Carl Edward Sagan was an American astronomer, planetary scientist, and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by exposure to light. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which were universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect.

9 November 1934

Born on the same birth date (9 November 1934): Ingvar Carlsson • Ronald Harwood

Born on the same birth day (9 November): Benjamin Banneker • Benny Mardones • Boaz Myhill • Byron De La Beckwith • Dave Bush • Donald Trelford • Johann Speth • Lio Tipton • Lyrica Okano • Nicolai Wergeland • Paul Cameron • Philippa of Guelders • Raymond Devos • Robert Duncan McNeill • Ryan Murphy (producer) • Zisis Vryzas

Born in the same month (November 1934): Alfred Schnittke • Catherine McGuinness • Gilbert Strang • Jerry Jameson • Joanna Barnes • John McGahern • Kenneth Baker, Baron Baker of Dorking • Laurence Luckinbill • Lew Hoad • Peter Dickinson (musician) • Peter Philpott • Rita Sakellariou • Terry Rand • William Mathias