It 'snows' metal on Venus.
13
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The light hitting the earth right now is 30 thousand years old.
163
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
The heart of an astronaut actually gets smaller when in outer space.
216
Some asteroids have other asteroids orbiting them.
131