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
Earth is the only planet in our solar system that's not named after a god or goddess.
17
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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.
7
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
Some asteroids have other asteroids orbiting them.
131
Jupiter is bigger than all the other planets combined.
254
It 'snows' metal on Venus.
13