The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
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The earth is .02 degrees hotter during a full moon.
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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
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The Earth gets 100 tons heavier every day due to falling space dust.
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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A comet's tail always points away from the sun.
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