Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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More than 20 million meteoroids enter Earth's atmosphere every day.
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Astronauts get taller when they are in space.
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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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Mars had an oxygen-rich atmosphere around 4 billion years ago
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