Pluto was Demoted to Dwarf Planet on This Day in 2006 — But Why?
On this day in 2006, Pluto was demoted to dwarf planet. Why did the astronomers decide to do so? Sixteen years ago, on August 24, 2006, in Prague, Pluto was demoted from being the ninth planet of the solar system, as per History.
Source: itechpost.com