Earth is the only planet in our solar system that's not named after a god or goddess.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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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 sun is 330,330 times larger than the earth!
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A 100-pound person on Earth would weigh 38 pounds on Mars.
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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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