関連ワード:
in 2006 pluto was classified as a dwarf planet in 2006 pluto was categorized as a dwarf planet why in 2006 pluto was classified as a dwarf planet not a full planet why in 2006 pluto was reclassified as a dwarf planet in 2006 pluto was reclassified as a dwarf planet true or false in 2006 pluto was reclassified as a dwarf planet what was it previously classified as who classified pluto as a dwarf planet
