Science

What is the third brightest object in the Earth's sky?

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Of which body system is the kidney an organ?
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Which tiny moon orbiting the asteroid Ida was discovered in 1994?
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What is a process used by plants to convert light energy into chemical energy?
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What percent of the Sun, by weight, is helium?
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On average how many miles is Pluto away from the Sun?
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What is the rate at which something moves called?
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