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• wewbull@feddit.uk ⁨1⁩ ⁨week⁩ ago

  That’s correct by definition, but the reason the definition was changed to exclude pluto was because our knowledge changed.

  We found more Pluto-like objects and it became clear they weren’t the same thing as the other 8 planets. They needed their own classification. So we created one (Dwarf Planets) and put Pluto in it along with its brethren.

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• sxan@midwest.social ⁨1⁩ ⁨week⁩ ago

  And also because if we included Pluto, we’d have to include another half dozen Pluto-sized dwarves we’ve discovered since.

  But, yeah, my understanding is that it’s really about dominance. Pluto is too submissive. Not alpha enough, if you will.

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