Clyde Tombaugh By kittynicholas Feb 4, 1906 Birth Period: Feb 13, 1929 to Feb 23, 1943 Worked at Lowell Observatory Feb 18, 1930 Discovered Pluto Feb 23, 1931 earned Jackson-Gwilt Medal Period: Aug 15, 1932 to May 23, 1939 went to University of Kansas Feb 23, 1934 married Patrica Edson Period: Feb 23, 1943 to Feb 23, 1945 Taught Navigation at Arizona State College Period: Feb 23, 1945 to Feb 23, 1946 became a Visiting Assistant Professor in Astronomy at the University of California at Los Angeles Feb 23, 1946 transferred to the ballistics research laboratories at the White Sands Proving Ground (now White Sands Missile Range, or WSMR) New Mexico Feb 23, 1951 He designed many new instruments there, among them, a camera called the IGOR Jan 17, 1997 Death Jan 19, 2006 New Horizons Launched with 1 ounce of Tombaugh's ashes Tombaugh's children Alden and Annette Jul 15, 2015 New Horizons flies past Pluto with Tombaugh's ashes