When an asteroid collides with another galactic body, it will become a meteor. Meteors will often leave behind craters where they land on the body.
Some moons were once asteroids, but the asteroids got pulled into the gravitational pull of the planet while going at a fast enough speed to go into orbit.
- Planets and moons without atmospheres to burn the meteors up usually are heavily scarred with craters.
- The largest asteroid is Ceres. Ceres is also considered a Dwarf Planet due to it being round.