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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The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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If you went out into space, you would explode before you suffocated because there's no air pressure.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
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Some asteroids have other asteroids orbiting them.
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Earth is the only planet in our solar system that's not named after a god or goddess.
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The population of the Earth has more than doubled since 1950.
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