Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
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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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The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
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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.
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It 'snows' metal on Venus.
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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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