Otzi the Iceman
They didn't realize it, but on September 19, 1991, two German tourists made history when they found the remains of Europe's oldest known mummy. Otzi, as the Iceman is now know, had been stuck in the ice for approximately 5,300 years. Otzi is now telling the story of what life was like in the Copper Age.
On February 18, 1930, Clyde W. Tombaugh, an assistant at the Lowell Observatory in Flagstaff, Arizona, discovered Pluto. For decades, Pluto was considered the ninth planet of our solar system.