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
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
If two pieces of metal touch in space, they become permanently stuck together.
808
There are two golf balls sitting on the moon.
721
Summer on Uranus lasts for 21 years.
358
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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