this post was submitted on 02 Jul 2025
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Pluto is a planet!
The only reason Pluto is no longer a planet is because we discovered there were loads more planets and couldn't be bothered to acknowledge their existence!
but so what?
we used to have a handful of elements, but when we kept discovering more, we didn't change the rules to have elements, and "strange elements" so schools only have to teach about 16 elements.
Well elements are elements. All of them are just protons and neutrons and electrons at the end of the day. They have different properties but all of them behave by the same rules.
But there's some big differences between the various kinds of bodies orbiting the Sun and how they're orbiting the Sun. Big asteroids were considered planets, until we discovered there's a shitload of them and they're all in roughly the same area. When it turned out Pluto is basically in the same situation and there's a lot more of the transneptunian objects, it was pretty clear that Pluto isn't special. If you compare it to planets it's pretty weird. But I think it's good that they created the dwarf planet classification because that also elevated Ceres back, hell yeah.
I'd rather we have dozens of planets, with news articles talking about "new planets discovered"
we can still teach the handful of "classical planets", so we can have posters, or have like periodic tables, and everyone be aware that they might go out of date as more is discoverd.
the solar system will be more exciting and more varied.
also, the "clearing orbit from similar objects" is time and orbit dependent,
larger orbits take longer to clear, which mean in a few billion years ceres might eject pluto and become a planet?
or we could have gas giants beyond pluto (like this hypothetical 9th planet ) which it would be unlikely it has cleared its orbit, so we could have a planet larger than Jupiter which we would call a planet, but if we discover another planet in its orbit (too large to clear), then we will have to say that it is a dwarf planet.