A comet's tail always points away from the sun.
2
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Venus is the only planet that rotates clockwise.
310
It 'snows' metal on Venus.
13
There are two golf balls sitting on the moon.
721
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236