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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A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
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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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Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
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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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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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