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How fast does light travel in one second?

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What does the first "A" in NASA stand for?
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Where is the world’s most active volcano located?
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Launched in 1995, what was the SOHO spacecraft designed to study?
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What scientist discovered that sunspots occur in an eleven-year cycle?
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What electronic device only allows current to flow in one direction?
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The term "falls" is best defined as what?
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A "philatelist" is a what?
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Who was the first person to use a telescope for astronomy?
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