Exomoon

An exomoon is like a normal moon, but it doesn't go around the Earth. Instead, it orbits around a planet that is located outside of our Solar System - which is why it's called an "exo" moon. Just like regular moons, exomoons can be made of rock and ice, and they also have their own atmospheres. Scientists think that exomoons might be good places to look for life beyond our Solar System.