There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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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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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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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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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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A comet's tail always points away from the sun.
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