More than 20 million meteoroids enter Earth's atmosphere every day.
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The moon is actually moving away from Earth at a rate of 1.5 inches per year.
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The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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41% of the moon is not visible from earth at any time.
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