Jupiter's moon Ganymede, is larger than the planet Mercury!
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Only 55% of Americans know that the sun is a star.
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The light hitting the earth right now is 30 thousand years old.
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Jupiter is bigger than all the other planets combined.
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The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
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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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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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Pluto is smaller than Russia.
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