In August of 2006, one of Mickey Mouse's favorite planets was kicked out of the popular group. Name that Solar System outcast.

Pluto got downgraded. The International Astronomical Union (IAU) relabelled Pluto a dwarf planet, as it didn't fulfill the three criteria to be counted as "full-sized." The piece it's missing? The dwarf "has not cleared its neighboring region of other objects.” Sorry, Pluto, better luck next time.

Asked by Jessica Holom · Last updated 5 years ago · 4.6K views · SOURCE