It's official: Pluto has been demoted, and it's all over for Charon, Ceres and Xena's hopes of becoming planets.
Well, for the time being anyway; it seems there are a number of objections to the decision, not least that the language in the definitions is illogical, and that it was voted on by less than 5% of the world's professional astronomers...
In the meantime, we now have dwarf planets. Possibly quite a lot of them, eventually.
We also have a good opportunity for Disney-based puns.
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