A comet's tail always points away from the sun.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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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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Sound doesn't travel in space.
255
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
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.
10
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4