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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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
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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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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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The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
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