In "Astrophysicist Chronicles Battle over Pluto," what reason does Dr. Tyson give for Pluto's status as America's favorite planet?
Neil deGrasse Tyson: Let’s celebrate the infinite variety in
the universe rather than ignore it and worry about just these nine
objects that have been discovered historically.
I am pretty sure it is Americans associate Pluto with the Disney character of the same name. Sorry if its not that but I think its right...