The moon is actually moving away from Earth at a rate of 1.5 inches per year.
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Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
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Sound doesn't travel in space.
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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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Astronauts get taller when they are in space.
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Some asteroids have other asteroids orbiting them.
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