The heart of an astronaut actually gets smaller when in outer space.
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Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
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The Earth gets heavier each day by tons, as meteoric dust settles on it.
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Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
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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.
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The temperature of the earth's interior increases by 1 degree every 60 feet down.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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Lightning strikes about 6,000 times per minute on this planet!
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