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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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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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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It 'snows' metal on Venus.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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