Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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NASA invented baby food as we know it today.
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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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There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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