The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
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
Summer on Uranus lasts for 21 years.
358
Buzz Aldrin’s mother’s maiden name was Moon.
9
Jupiter is bigger than all the other planets combined.
254
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