An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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Jupiter is bigger than all the other planets combined.
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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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Pluto is smaller than Russia.
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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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