Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
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Some asteroids have other asteroids orbiting them.
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It 'snows' metal on Venus.
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A 100-pound person on Earth would weigh 38 pounds on Mars.
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The sun puts out more power in 1 second than mankind has ever used within human existence.
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Summer on Uranus lasts for 21 years.
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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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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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