An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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The sun is 330,330 times larger than the earth!
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A comet's tail always points away from the sun.
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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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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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There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
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