Highlights of a Headlong Flight: I wish people would stop this nonsense about Pluto being given a dwarf planet designation

orsaeth:

It’s not the only one, guys. If you include Pluto as a planet again, there still won’t be nine planets, there will be far more. You’d have to include Eris, Makemake, Ceres (which actually got promoted from being an asteroid), Haumea, Quaoar, Orcus, Sedna, and 2007 OR10, plus an amount estimated to…