Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The heart of an astronaut actually gets smaller when in outer space.
216
Sound doesn't travel in space.
255
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Summer on Uranus lasts for 21 years.
358
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
A comet's tail always points away from the sun.
2
Some asteroids have other asteroids orbiting them.
131