IAU Redefines Planet; Pluto Becomes Dwarf Planet – August 24, 2006
The International Astronomical Union (IAU) redefines the term "planet" such that Pluto is now considered a dwarf planet. Date: August 24, 2006 Read more on Wikipedia โ ๐ Other events on August 24 ๐ Events on this day in 2006 ๐ On This Day (Today)