It 'snows' metal on Venus.
13
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The heart of an astronaut actually gets smaller when in outer space.
216
The sun is 330,330 times larger than the earth!
190
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
There are two golf balls sitting on the moon.
721