The heart of an astronaut actually gets smaller when in outer space.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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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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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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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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41% of the moon is not visible from earth at any time.
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There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
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