Buzz Aldrin’s mother’s maiden name was Moon.
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The population of the Earth has more than doubled since 1950.
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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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The Earth gets heavier each day by tons, as meteoric dust settles on it.
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The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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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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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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