What are impact craters?

Impact craters are big holes on planets and moons made when something hits really fast.

Imagine you're playing outside with a ball and a friend. Your friend throws the ball at you, whap!, it hits your chest, and maybe even makes a little dent in your shirt. That's like what happens when a space rock (called a meteorite) crashes into a planet or moon.

When a space rock comes zooming through space and smacks into something, it creates a crater, which is just a fancy word for a big hole or depression in the ground. The bigger the rock, and the faster it goes, the bigger the crater!

Sometimes, the impact can be so strong that it even makes mountains around the hole, like when you dig a really deep hole in the sandbox with your shovel, and the sand piles up on the sides.

Our moon has lots of craters. You can see them as bright spots from Earth. Even Earth has some famous ones, like the one that made the Chicxulub crater, a giant hole under what is now Mexico, which might have helped make dinosaurs go extinct!