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.
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Lightning strikes about 6,000 times per minute on this planet!
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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 Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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A 100-pound person on Earth would weigh 38 pounds on Mars.
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Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
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Buzz Aldrin’s mother’s maiden name was Moon.
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