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Isn't that kind of the issue though? Pluto's moon isn't just round it's about half the size of Pluto itself such that the Pluto-Charon system orbits around a po
by XorNot 1y ago
Isn't that kind of the issue though? Pluto's moon isn't just round it's about half the size of Pluto itself such that the Pluto-Charon system orbits around a point in space between the two bodies.
- naikrovek 1y agoJupiter and the sun orbit a barycenter, too. Jupiter is a planet.
- XorNot 1y agoAnd the sun is a star. The point is the category exists to be useful: if Pluto is a planet then a ton of other stuff is technically a planet.
- naikrovek 1y agoand in cases where the star is binary with a huge rocky planet? what are the large satellites in that star system? are they planets of the star, or moons of the huge rocky planet?