Imagine playing a game where you throw rocks at your friend's toy house. Every time someone throws a rock, part of the house breaks and gets a new dent or hole. Our moons are like that toy house, they get hit by lots of space rocks over millions of years. Each time one hits, it makes a crater, which is kind of like a dent on the moon's surface.
Examples
- A child throwing pebbles into a mud puddle
- A rock band dropping stones on a tin roof
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See also
- Why Are There No Moons Around Mercury?
- Why Are There So Many Moons Around Jupiter?
- How Does the Gravity of Jupiter Affect Our Solar System?
- How Does the Solar System Actually Move?
- How does gravity and motion keep the solar system in balance?