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  • Frank [he/him, he/him]
    ·
    2 years ago

    , it made no sense to consider Ceres akin to other planets

    ehhhhhhhhh they could have decided that planets were any body not orbitting another body that was massive enough to form a spherical shape under it's own gravity. The definition of planet is totally arbitrary and the only reason they changed Pluto's designation is that they figured it would be less of a problem to have seven planets than to have forty or fifty.