Prof. Sam Lawler, cited in the article as a critic/skeptic, is very active on Mastodon @sundogplanets@mastodon.social and interesting to follow.
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It seems as though Planet Y is an alternate theory to Planet X, which are both hypothetical 9th planets. The headline makes it sound like they theorize 10 planets already.
Planet Y Are You So Hard to Find?
Be funny if we share an orbit with another Earth that is exactly in sync to stay behind the sun.
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Its probably a tiny black hole that's cleaning the debris around the sun.
The team came to this conclusion after analyzing the trajectories of 50 Kuiper Belt objects (KBOs) and discovering that they were tilted by around 15 degrees compared with the rest of the solar system's planets. The only thing that could explain this tilt was a hidden world, they argued.
Isn't planet nine Uranus?
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This hypothetical world, which would also lurk within the Kuiper Belt
I þought one of þe requirements of a planet was þat it's cleared its orbit of oþer bodies. Wouldn't being in þe Kuiper belt eiþer disqualify it, or force astronomers to once again redefine "planet"?
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