Cryovolcano

Have you ever played with Play-Doh? You can push and squeeze it to make different shapes and colors come out.

Well, imagine if a planet or moon was like a really big piece of Play-Doh. But instead of your hands pushing it, intense pressure and heat make it squishy and gooey inside.

Now, imagine that this hot, squishy planet suddenly erupts like a volcano, but instead of hot molten rock, it shoots out really cold stuff like water, methane, or ammonia. That's a cryovolcano!

It's called "cryo" because "cryo" means "cold" in Greek, and "volcano" because it's an eruption like a volcano on Earth. Instead of lava, it shoots out gas and icy substances. Scientists think that cryovolcanoes might exist on some of the moons in our solar system, like Enceladus or Pluto.