An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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A comet's tail always points away from the sun.
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
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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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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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