Mercury is Smaller Than Some Moons

Mercury is the smallest planet (unless you still count Pluto). Its radius at the equator is 2440km. This means that it's smaller than Jupiter's largest moon, Ganymede, as well as Saturn's largest moon, Titan. Mercury is just barely larger than the second-largest of the Jovian moons, Callisto.

Small world, eh? HAHAHAHAA.

Triton

Triton is possibly the most awesome moon evar!

It's the largest of Neptune's 13 moons. Only it doesn't fuck around. It has a retrograde orbit!

"Retrograde orbit" means the moon moves in the opposite direction of the planet's rotation.

There are extreme seasonal changes every Neptunian year because its two poles take turns pointing directly at the sun.

Oh, did I mention its orbit is degrading? That means it will fucking crash into Neptune!! Or break apart and become rings around the planet.

Yeah, so that's about it...

...EXCEPT FOR THE CRYOVOLCANOES!!!! Cryovolcanoes are basically volcanoes that spew ice. There is a translucent layer of frozen nitrogen, which creates a "solid greenhouse" effect, which warms layers below. The liquids below the frozen nitrogen erupt and freeze when they exit the cryovolcano!


Awesome!