Yeah I know all about the controversies regarding Zecharia Sitchin, and that was a part of my skepticism along with the whole aliens who bred us to mine for gold thing.
But yet here we are with an undiscovered planet that's pretty much exactly what he predicted. Same size, same oblong elliptical orbit... kinda weird coincidence at least no?
I need to digest.
there are tons of planets and moons in our asteroid belt(s) too. lots of hypothetical planets over the years too.
some people (scholars and scientists) think there was another planet between mars and jupiter, where the asteroid belt now is. this "9th planet" could have been flung out from our early solar system from a cataclysm just like that.
we also think that uranus and neptune switched orbits early in the solar system. that neptune formed and started out closer to the sun than it is now.