Sound doesn't travel in space.
255
Some asteroids have other asteroids orbiting them.
131
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
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