Science
What tool uses a magnetic needle that points north?
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About how long does it take for sunlight to reach the Earth from the Sun?
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What is the proper name for a "sundog", or an atmospheric optical phenomenon?
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Which of these is a famous astronomer for whom a comet was named?
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The Hubble Space Telescope was deployed on which Space Shuttle in 1990?
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When we add two forces, what do we call the answer?
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Mariner IV sent the first pictures of which planet back to earth?
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Where is the observatory where Percival Lowell first theorized the existence of Pluto?
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