OK SO GET READY FOR ME TO GEEK OUT ABOUT SPACE
Specifically, my 2 favorite moons, both of which happen to be Saturn's

The snowball I'm holding is Enceladus, which is the lesser-known moon, but it's SO COOL
So it's one of those moons that we think has a sub-surface ocean, like Europa or Ganymede, but the difference here is that Enceladus has prominent cryo-volcanoes! They shoot the water from the aforementioned sub-surface oceans into space, because Enceladus' atmosphere is too small to hold it. Saturn's gravity, however, DOES hold that water, and that water forms the outermost "E-ring" of all of Saturn's rings! So cool.

The other moon I'm holding is the more well-known Titan, not to be confused with Neptune's Triton. Titan has a super thick atmosphere, the thickest of any moon by far. It's the 2nd biggest moon in the whole solar system, and bigger than Mercury. It's also, surprisingly, the most Earth-like object that we know of! There are lakes on Titan, but they're not made of water - they're liquified methane because of how cold it is there. It's got its own weather system, and instead of a water cycle, it's got a methane cycle. They're sending a probe to Titan, set to launch in 2028, and I can't WAIT for what else it finds. I can't overstate how much I'd love to stand on its surface and see Saturn while on a boat in one of those lakes.

If I had 3 hands, I'd also be geeking out about Io.