There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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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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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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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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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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