Science
Who was the first President of the "Planetary Society", an organization of amateur astronomers?
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Which Apollo mission was launched on December 21, 1968, and spent Christmas in lunar orbit?
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Launched in 1995, what was the SOHO spacecraft designed to study?
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Which branch of science did young Carl Sagan tell his grandfather he wanted to practice?
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What word is given to sounds that are too high for humans to hear?
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Which state saw the first self-sustaining nuclear chain reaction in 1942?
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