The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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Lightning strikes about 6,000 times per minute on this planet!
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One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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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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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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Earth is the only planet in our solar system that's not named after a god or goddess.
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