Percival Lowell established the observatory after what American astronomer that discovered Pluto in 1930?
Lowell Regio:  It is named after Percival Lowell who established the observatory where Clyde Tombaugh discovered Pluto. Clyde Tombaugh: Clyde William Tombaugh ( ; February 4, 1906January 17, 1997) was an American astronomer. Clyde Tombaugh:  He discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt.
Clyde Tombaugh