Sound doesn't travel in space.
255
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 density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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.
22
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
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.
11
Earth is the only planet in our solar system that's not named after a god or goddess.
17