What Is Pluto? 8 Facts About Dwarf Planet Discovered 87 Years Ago

Pluto, the icy object at the end of our solar system, has endured a rocky road since it was discovered in 1930. From its honorable designation as the ninth planet to its demotion to a dwarf a decade ago, Pluto is no longer an elite member of the planetary family. Saturday marks the 87th anniversary of Pluto’s discovery, so to celebrate, here are eight facts about the lonely object at the edge of the solar system.