Mars had an oxygen-rich atmosphere around 4 billion years ago
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It 'snows' metal on Venus.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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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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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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From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
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