The Night I Discovered Pluto

Just what would one expect Clyde W. Tombaugh to do the night of Feb. 18, 1930 when the 24 year-old amateur astronomer ended decades of speculation and found the far away planet? Not what he did, but let's back up. The Lowell Observatory outside Flagstaff, Arizona was founded by Percival Lowell of Boston in 1894 to study Mars. But Lowell became convinced there was another planet out there somewhere, “Planet X,” and searched for it until his death in November of 1916. In 1929, with a larger te