Personally, I love Pluto. When I was a child, I learned "there are nine planets in our solar system"... but since then, Pluto has been reclassified as a "dwarf planet" which is not a a first class planet at all. This was a very controversial decision that not all astronomers agreed with and I followed the argumentation with great interest. But because it had not cleared it neighborhood of other objects, "they" decided it was not a "planet" and that was that. Still, it qualifies for a dwarf planet, so it still is a "planet" in my book. (As apposed to an asteroid, comet, or some other more trivial celestial body.)
Well, I love all the odd things about Pluto, among these are:
Pluto's biggest moon, Charon, is about half its width. They orbit each other like a dual planet system. (See photo)
Pluto has an elliptical orbit (year) that takes 248 Earth years to complete. If there were humanoid life on Pluto and their lifespan was similar to ours, they would never age to even one Pluto year old. Most would die before reaching 1/3 of a year old. Its orbit also comes closer than Neptune's orbit at its closest, but Pluto orbits at an inclined plane to that of the solar system's eight planets. Because of this very odd elliptical orbit, the methane can freeze and snow (with red snow!) and then thaw and refreeze again during its 248 year orbit as it gets closer and then farther from the Sun.
Pluto is tiny (about) 2/3 the size of our moon, but rotates at 153 Earth hours. If there were humanoid life on Pluto and they had to work 1/3 of a day like we do (working 8 hour days) their work day would be 50 hours.
Pluto was named by an 11 year old who was fascinated by Roman Mythology. Pluto was the god of the underworld, also named in Greek: Hades. All of its moons are named similarly: Charon, Styx, Nix, Hydra, Kerberos. If you don't know these names, you don't know your mythology! I always loved Greek and Roman mythology, so I love Pluto and its moons for this alone.
There are so many other interesting things about Pluto, the most prominent of the Kuiper belt objects and probably the most well known dwarf planets.
I thought I would share this cool stuff about my favorite planet: Pluto. Yes, Pluto will always be the ninth planet to me. Go ahead and make the other dwarf planets actual planets if you wish. I don't care. And even though it rains diamonds on Neptune, Pluto's red methane snow rocks.
Pluto and Charon doing their eternal dance