why is pluto a dwarf planet
Pluto is considered a dwarf planet because A., it is the smallest planet (now not considered a planet anymore) in the Milky Way and B., because a larger planet was discovered â¦ to be behind it. Therefore, Pluto is no longer officially a planet, and is now a dwarf planet, compared to the others.luto is the roman god of darkness and the underworld. When  discovered in 1930 the planet was named Pluto was inspired because  it was then the most distant planet with lit â¦ tle sunlight. Pluto has  now been reclassified as a dwarf-class planet.