Everyone seems to have missed the news that Pluto is not a planet except me. Are all my friends living under rocks?
Pluto (IPA: /ˈpluːtəʊ/), designated (134340) Pluto in the Minor Planet Center catalogue, is the second-largest known dwarf planet in the solar system. (emphasis mine)
Pluto was the ninth planet from 1930 until August 24, 2006. We started discovering a lot of other things in space that were a lot like Pluto, including Eris and Ceres, that we didn’t consider planets. So basically a bunch of astronomers got together and as of 8/24 last year, changed what a planet is. Pluto isn’t a full-fledged planet anymore; it, Eris, and Ceres are now dwarf planets.
Seriously, did everyone miss this?