Earth is the only planet in our solar system that's not named after a god or goddess.
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It 'snows' metal on Venus.
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The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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Some asteroids have other asteroids orbiting them.
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