• superkret@feddit.org
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    1 month ago

    How can we even know it’s a planet when we haven’t observed a single orbit, yet?
    Maybe it’s just a really big comet.

    • Gladaed@feddit.org
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      1 month ago

      It’s not really big. There are multiple Pluto like planetoids. Also there is a hunk of rock in the asteroid belt youcould name a planet.

      • psud@aussie.zone
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        1 month ago

        Ceres is more than a third of the mass of the asteroid belt. It’s at least an order of magnitude bigger than anything else in its orbit. It’s hardly a hunk of rock

        • Tlaloc_Temporal@lemmy.ca
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          29 days ago

          There’s also not that much rock, only 73% of the mass. The rest is ice and mud, with half it’s volume being water in some form.