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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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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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 Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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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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A comet's tail always points away from the sun.
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