I just told my brother that Pluto was reclassified and I had to explain to him why it was declassified in the first place. He that it was due to a lack of a sustainable atmosphere, and he thought it was a moon………….
Apparently schools are teaching people that a planet must have an atmosphere to be a planet, even though it’s widely known what the true IAS guidelines are. (Of course, they will have to be reworked now that Pluto has been reclassified)
I thought it was because it has a super irregular orbit