Earth is the only planet in our solar system that's not named after a god or goddess.
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
A 100-pound person on Earth would weigh 38 pounds on Mars.
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There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
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