One of the greatest discoveries by a KU alum just got a stamp of approval. In 1930, a 24-year old amateur astronomer named Clyde Tombaugh was working at the Lowell Observatory in Arizona to pay for his upcoming freshman year at KU when he discovered Pluto. Tombaugh’s stellar discovery earned him a scholarship to the University of Kansas, where he completed his bachelor’s degree (1936) and master’s degree (1938) in astronomy. Tombaugh and Pluto were back in the news last year when the New Horizons probe finished its nine-year journey to Pluto and sent back some of the highest-quality images of the former planet to date.