@tcn33 It’s not a planet unless Ceres, Haumea, Makemake, Eris, 2207OR10, Quaoar, Sedna, Orcus, 2002MS4 & Salacia are, too. +prob many more.
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@kchangnyt Because planetary scientists care about planets as places, as interesting worlds with analogous processes subject to comparison.
@DrFunkySpoon Again non-Alan planetary scientists never argued for Ceres. You’re also clinging to the cultural allure of “planet.”