this post was submitted on 14 Oct 2025
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'Planet Y' theory hints at hidden Earth-size world lurking in the solar system — and it could be much closer to us than 'Planet Nine' (www.livescience.com)
submitted 5 months ago by RegularJoe@lemmy.world to c/science@lemmy.world
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[–] StrongHorseWeakNeigh@piefed.social 3 points 5 months ago

The Kuiper belt is relatively full of stuff compared to space outside of it but it is an enormous volume and the distance between objects is very large.