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minus-squarehumanspiral@lemmy.calinkfedilinkEnglisharrow-up0·7 days agoWhat is argument for Ceres and Eris being planets?
minus-squaredeadbeef79000@lemmy.nzlinkfedilinkEnglisharrow-up0·5 days agoHydrostatic equilibrium. Their gravity is enough to pull their mass into a sphere-ish shape. Contrast to asteroids that are irregular.
minus-squarelunarul@lemmy.worldlinkfedilinkEnglisharrow-up0·7 days agoLarge round bodies orbiting the sun.
What is argument for Ceres and Eris being planets?
Hydrostatic equilibrium. Their gravity is enough to pull their mass into a sphere-ish shape.
Contrast to asteroids that are irregular.
The same as for Pluto
Large round bodies orbiting the sun.