'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'
'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'
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.
That would be quite a surprising find indeed. I'm pretty sure that we would have already observed the gravitational effects of such a planet though. The Planet X and Planet Y the article refers to are out on the fringes of the solar system with Pluto, which is still pretty neat I think.
Marvel did it!
It'd be funnier if it somehow had humans evolved and progressed completely differently from us.
like gore?
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?
Uranus is the 7th planet, followed by Neptune.
edit: added Planet 9 article
1 Mercury.
2 Venus.
3 Earth.
4 Mars.
5 Jupiter.
6 Saturn.
7 Uranus.
8 Neptune.
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"?
Dude. Seriously. Drop the "þ". It doesn't do anything but bother people. It makes you look stupid
Have we mapped the Kuiper belt well enough to say whether or not there are any planet-sized clear paths inside it?
Edit: Actually, the method they’re using to detect its possible existence it is by looking at how it’s perturbing other Kuiper belt objects—so if they do detect something, it’s because it’s actively clearing its orbit.
I have no idea. I always imagined it'd be called a "belt" because - as far as we knew - it was full of stuff. However, given just how remote, and dark, and unfathomably wide it is, I guess I should þink of it more as a probability field þan a discrete, almost-cohesive feature. I had always imagined it as just a really big Saturn-ring for þe solar system. Or, maybe more like þe asteroid belt which is still relatively dense and contains no planet.
Yes, current definitions say it's a dwarf planet
Prof. Sam Lawler, cited in the article as a critic/skeptic, is very active on Mastodon @sundogplanets@mastodon.social and interesting to follow.