February 18 1930

US Astronomer Clyde Tombaugh Discovers Pluto

Clyde William Tombaugh (February 4 1906 - January 4 1997) was an American astronomer. Although he is best known for his discovery in 1930 of the Dwarf Planet Pluto, the first object to be discovered in what would later be identified as the Kuiper Belt, Tombaugh also discovered many asteroids; he also called for serious scientific research of unidentified flying objects.