What If Planet Nine Has Satellites?

"...some recent studies suggest that Planet Nine could be a dark object, such as a primordial black hole..."

That's a neat idea.

Planet Nine is Pluto.

You see how the entire conversation was reframed from demoting Pluto?

Babylonians knew about the 'tenth' planet, everyone and their mom knew about it. And there's a lot more in the ancient histories to learn about it.

So 'scientists' decided Pluto was no longer a planet, then the 'tenth' planet now becomes the 'ninth' planet, and we get articles like this.