gleamd

CARL SAGAN was the David Duncan Professor of Astronomy and Space Sciences and Director of the Laboratory for Planetary Studies at Cornell University. He played a leading role in the American space program since its inception. He was a consultant and adviser to NASA since the 1950's, briefed the Apollo astronauts before their flights to the Moon, and was an experimenter on the Mariner, Viking, Voyager, and Galileo expeditions to the planets. He helped solve the mysteries of the high temperatures of Venus (answer: massive greenhouse effect), the seasonal changes on Mars (answer: windblown dust), and the reddish haze of Titan (answer: complex organic molecules).
Sagan authored the best selling science book to this day, Cosmos. He also produced and stared in a television series in the 1970s, "Cosmos: A personal Voyage" which has been seen by over a billion people, in countries all around the world.
Carl Sagan was an avid user of marijuana, although he never publicly admitted it during his life. Under the pseudonym "Mr. X," he wrote an essay concerning cannabis smoking in the 1971 book Marihuana Reconsidered. In the essay Sagan commented that marijuana encouraged some of his works and enhanced experiences