Always "Pluto, Pluto, Pluto". Why does no one ever remember Ceres, Eris, Haumea, and Makemake? They're each as much of a "planet" as Pluto is.

1. The rocks, ice, and gas out there doesn't give a shit what we think.

2. Arguing that a planet must have cleared its orbit of other major bodies invokes an arbitrary size and location judgement for what constitutes a planets orbital space and what constitutes a major body.

3. The argument that the inclusion of Pluto would require the inclusion of a lot of other planets and that that is obviously bad/wrong is absurd. Why can't a system have a whole lot of planets?

I propose an unoriginal definition of a planet:

1. Large enough to become spherical under its own mass.

2. Too small to fuse hydrogen, regardless of its presence.

I think we should really consider the term "planet" to be somewhat vague, and use the term "proper planet" when referring to all the things that match my proposed definition. The proposed definition includes things we have other names for and that's okay; we just use those other names when we need the extra specificity, like moon, rouge planet, dwarf planet, etc.

The stupidest consequence of the definition is not the classification of Pluto, but that there are only eight planets in the entire universe.

a planet is a celestial body that:

1. is in orbit around the Sun

Seems to be an appropriate thread for this absolute banger: https://youtu.be/EuRjmzz6qL0

Gas giant planets, ice giant planets, rocky planets, dwarf planets.

I don't see what the big deal is.

Hi.

new planet definition is dumb and i don’t subscribe to it. pluto is always a planet as far as im concerned

False. Pluto is the greatest robot on Earth.

me knowing pluto is a comrade

@[email protected]

It you class it as a planet you can have to do it for all the others

Me who knows Pluto is a manga

Pluto isn't a planet but Phobos is still a moon. Seems unfair.

Are dwarf stars not stars?

Back in school we used to have a book with an illustration of the solar system with all the planets in neat almost circular orbits in a plane around the sun. And there was Pluto with its skewed orbit that was all over the place. My teacher couldn't convince me that it should be lumped in with the rest of the planets.

I felt satisfaction when Jim Carrey's kids in Me, Myself and Irene complained that it shouldn't be a planet. That was the first time I ever heard a person say that.

Me, who misread the caption at first, who knows Plato is a philosopher