Welp, science progresses.


Pluto is on the outskirts of our solar system, hence the reason people didn't know much about it for years. If Pluto is a planet, then so are have the giant rocks floating in orbit.

There are two types of planets, jovian and terrestrial. Jovian planets (mostly) have no solid surface, they're just gas. Terrestrial planets are highly dense and rotate slowly. Pluto shares some characteristics, but its just a tiny ice turd that has an orbit. Most moons are larger than Pluto.