The Bad Astronomer has a post up about new measurements on the size of Eris. Remember Eris it is the one that started out as Xena and caused the demotion of Pluto. Any way it turns out that Eris is a bit bigger than Pluto so there is no way we can ever have 9 planets again.
Call it a planet if you want. It doesn’t matter that much to me — and less to Pluto itself — but you’ll be doing the object, and yourself, a disservice. And Eris is bigger anyway. Nyah nyah.