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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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.
4
Jupiter is bigger than all the other planets combined.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
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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