Mars had an oxygen-rich atmosphere around 4 billion years ago
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The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
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The light hitting the earth right now is 30 thousand years old.
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There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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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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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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