Why Was Pluto Classified As A Dwarf Planet And Not One Of The True Planet As It Was In The Original?

Why Was Pluto Classified As A Dwarf Planet And Not One Of The True Planet As It Was In The Original? Answer. The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially