ABSENCE OF EVIDENCE

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"Absence of evidence is not evidence of absence" - Carl Sagan

Dr Carl Sagan is one of our heroes. He should be yours too. He was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator.

He played a leading role in the American space program since its inception. He was a consultant and adviser to NASA beginning in the 1950s, he 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 temperature of Venus (a massive greenhouse effect), the seasonal changes on Mars (windblown dust) and the reddish haze of Titan (complex organic molecules).

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100% organic ringspun combed cotton t-shirt.

Relaxed fit. Heavyweight and super soft.