What is Europa?

Europa is a moon that circles around Jupiter, and it might have ocean water underneath its icy surface.

Imagine you have an ice cream cone, super cold and smooth on the outside. But if you dig down deep enough, there's warm chocolate sauce inside. Europa is kind of like that ice cream cone: it has a thick layer of ice covering it, but below that, scientists think there's a big ocean, maybe even with liquid water, just like Earth’s oceans!

Europa is special because it might have life hiding under all that ice. Just like how we find tiny creatures in the puddles and lakes on Earth, maybe there are little ones swimming in Europa's hidden ocean too.

Also, Europa gets bumped by Jupiter sometimes, kind of like when you push a swing. These bumps can make the ice crack and shift, which might help bring some of that hidden water up to the surface now and then.

So, Europa is like an icy ball with a secret warm ocean inside, and it might be hiding little swimmers just like we have here on Earth!