> Can you list some important implications of "is Pluto a planet or not?"
I remember reading in 'A Short History of Nearly Everything' that Pluto was the first and only planet discovered in the USA, all the rest having been discovered in Europe.
I don't know if that had any implications for the reactions to IAU decision to demote Pluto to a dwarf planet, but it's easy to imagine how it would have been an even bigger deal if the other planets had been discovered by, for eg., Russia back in the day.
I remember reading in 'A Short History of Nearly Everything' that Pluto was the first and only planet discovered in the USA, all the rest having been discovered in Europe.
I don't know if that had any implications for the reactions to IAU decision to demote Pluto to a dwarf planet, but it's easy to imagine how it would have been an even bigger deal if the other planets had been discovered by, for eg., Russia back in the day.