Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Jupiter is bigger than all the other planets combined.
254
Summer on Uranus lasts for 21 years.
358
There are two golf balls sitting on the moon.
721