this post was submitted on 07 Jan 2026
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Science Memes

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[–] nialv7@lemmy.world 149 points 4 months ago (74 children)
[–] Zerush@lemmy.ml 104 points 4 months ago (61 children)

Correct, it's called planet when it orbits arround the Sun AND has cleaned it's orbit from asteroids, not the case of Pluto, whose orbit is still full of other objects, some even bigger than Pluto itself.

If it orbits an Planet instead of the Sun, it's a Moon, even if it is bigger than some other planets.

[–] nexguy@lemmy.world 6 points 4 months ago* (last edited 4 months ago) (30 children)

Jupiter has a permanent cloud of asteroids that follow it and neptune crosses the orbit of pluto so neither of those have cleared their orbits so of course they made exceptions so that their contrived definition fits.

[–] Yondoza@sh.itjust.works 23 points 4 months ago* (last edited 4 months ago) (1 children)

Jupiter's Trojan asteroids sit at Lagrange points. Material found there is not counted in the 'clearing the orbit' criteria. They are in stable orbits caused by the mass of the planet in question, not in lieu of a massive enough body.

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