Venus is the only planet that rotates clockwise.
310
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Earth is the only planet in our solar system that's not named after a god or goddess.
17
More than 20 million meteoroids enter Earth's atmosphere every day.
139
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Sound doesn't travel in space.
255
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