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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More than 20 million meteoroids enter Earth's atmosphere every day.
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The Earth gets heavier each day by tons, as meteoric dust settles on it.
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Summer on Uranus lasts for 21 years.
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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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Lightning strikes about 6,000 times per minute on this planet!
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A comet's tail always points away from the sun.
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