@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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@AlanStern And that's just in this star system. Propose new category for the nine: "Classical planets."@kchangnyt@plutosgems
@Rand_Simberg @AlanStern @plutosgems That's silly. That's just "the planets my parents grew up with."
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@kchangnyt That's too long a phrase. And meaningless to someone three generations from now.@AlanStern@plutosgems -
@kchangnyt It's a handy way to describe what was historically considered a planet, but definition has changed.@AlanStern@plutosgems - 2 more replies
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