Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Summer on Uranus lasts for 21 years.
358
Earth is the only planet in our solar system that's not named after a god or goddess.
17
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Pluto is smaller than Russia.
9