Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
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The light hitting the earth right now is 30 thousand years old.
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There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
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The Earth gets heavier each day by tons, as meteoric dust settles on it.
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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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The earth rotates more slowly on its axis in March than in September.
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Today's top fuel dragsters take off with more force than the space shuttle.
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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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