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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Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
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It 'snows' metal on Venus.
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There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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