Eino raised his hand. "Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune are the eight planets, but aren't other celestial bodies, like Pluto, considered to be Dwarf Planets?" So did that mean it was a planet, but a tiny planet, or half a planet? He wasn't entirely sure if it was solely its size that classified it as a Dwarf planet, but it could also be other criteria. Hopefully the professor didn't mind the question, he hadn't even planned on asking it just kind of came out.