Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
41% of the moon is not visible from earth at any time.
103
Jupiter is bigger than all the other planets combined.
254
Only 55% of Americans know that the sun is a star.
986
Earth is the only planet in our solar system that's not named after a god or goddess.
17