In 2006, the reclassification of Pluto sparked widespread debate and intrigue as our Solar System seemingly lost a planet. This video explores the criteria set by the International Astronomical Union that led to Pluto's rebranding as a dwarf planet. Delve into the controversy surrounding this cosmic decision and discover the specific test Pluto could not pass to retain its planetary status. Join us on a journey to understand the intricate details behind this astronomical redefinition and its lingering impact.