• AVincentInSpace@pawb.social
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    11 months ago

    it always kinda bugs me that people lose their minds over Pluto but can’t name even one of the other four dwarf planets in our solar system

      • Pegajace@lemmy.world
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        11 months ago

        No, because absolute size is not what makes a moon a moon. Our Moon is a moon because it directly orbits a planet, not a star. Charon is massive enough relative to Pluto that the former does not directly orbit the latter, but instead they both orbit a common barycenter located between them, making them a binary planetary system.