Question

When was Clyde William Tombaugh full professor at New Mexico State University?
a) 1929-1936
b) 1965-1973
c) 1936-1945
d) 1948-1960

Answer 1

the answer is 1965-1973

Answer 2

Death. Tombaugh died on January 17, 1997, when he was in Las Cruces, New Mexico, at the age of 90. He was cremated. A small portion of his ashes was placed aboard the New Horizons spacecraft.

Pluto, once believed to be the ninth planet, is discovered at the Lowell Observatory in Flagstaff, Arizona, by astronomer Clyde W. Tombaugh. ... On February 18, 1930, Tombaugh discovered the tiny, distant planet by use of a new astronomic technique of photographic plates combined with a blink microscope.