Science
What is Neptune's period of revolution around the Sun?
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What is matter that doesn't allow light to pass through called?
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What is water stored beneath the surface of the Earth called?
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Where is the observatory where Percival Lowell first theorized the existence of Pluto?
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Which planet has a great red spot that is probably a large storm?
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What is defined as the average distance from the Earth to the Sun?
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Which song was used to wake up the first Space Shuttle crew in orbit?
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