The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Only 55% of Americans know that the sun is a star.
986
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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
Today's top fuel dragsters take off with more force than the space shuttle.
120
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