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Birth
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Period: to
Worked at Lowell Observatory
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Discovered Pluto
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earned Jackson-Gwilt Medal
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Period: to
went to University of Kansas
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married Patrica Edson
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Period: to
Taught Navigation at Arizona State College
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Period: to
became a Visiting Assistant Professor in Astronomy at the University of California at Los Angeles
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transferred to the ballistics research laboratories at the White Sands Proving Ground (now White Sands Missile Range, or WSMR) New Mexico
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He designed many new instruments there, among them, a camera called the IGOR
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Death
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New Horizons Launched with 1 ounce of Tombaugh's ashes
Tombaugh's children Alden and Annette -
New Horizons flies past Pluto with Tombaugh's ashes
