An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
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If you went out into space, you would explode before you suffocated because there's no air pressure.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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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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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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Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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