Earth is the only planet in our solar system that's not named after a god or goddess.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
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The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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If two pieces of metal touch in space, they become permanently stuck together.
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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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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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