Jupiter's moon Ganymede, is larger than the planet Mercury!
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A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
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Sound doesn't travel in space.
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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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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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There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
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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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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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