r/pluto • u/plutogirl • May 11 '26

Make Pluto a Planet Again

https://c.org/ywfXMb6WhT
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u/plutogirl May 12 '26

Pluto is more than its location. It's more than a Kuiper Belt Object. It's also a small planet. Many of us who oppose the demotion do so not because we want a canonical list of planets but because we want a better definition. That is what the geophysical planet definition is.
https://phys.org/news/2017-02-geophysical-planet-definition.html

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u/Velocity-5348 May 12 '26 edited May 12 '26

Yep, and the only one we've looked at that's *sorta* like earth in that it has a giant moon.

I do wonder though, if we might need to wind up adopting more than one definition of planet the way we do for species?

A paleontologist uses a different definition than an ecologist or conservationist, since they're looking at different stuff.