Word: tombaugh
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Dates: during 1980-1989
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...many years the astronomers at the Lowell Observatory, which Percival Lowell built with his own money at clear-aired Flagstaff, Ariz., have been pointing their telescopes to the path in the skies where he had said his planet would be moving. The night of last Jan. 21, Clyde W. Tombaugh, 24, an assistant at the observatory, saw a strange blotch of light on a new plate. He hastily took the photograph to Vesto Melvin Slipher, director of the observatory. They were quite excited. Here visibly was Percival Lowell's proof. Night after night they rephotographed the planet. Pictures showed...