Science

What is a blue moon?

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To which part of physics does the Archimedes' Principle refer?
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What are the "Big Dipper" and "Orion" examples of in the night sky?
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What is Neptune's period of revolution around the Sun?
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Which scientific term means "measure of resistance to flow in a liquid"?
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On average how many miles is Pluto away from the Sun?
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What kind of microscope is an SEM microscope?
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What system of measurement is used in science?
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How often does sunspot activity reach its lowest point?
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