Science
What is the second planet in distance from the sun?
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What is the generic term for very small loose particles of hard, broken rock or minerals?
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How many Earth years does it take Mars to go around the Sun?
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Ian Shelton, who discovered Supernova 1987A, while observing in Chile, was working for what university?
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What is the maximum indirect fire range of a Browning M2 .50 caliber machine gun?
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