where was he born?
Streator, Illinois
Clyde Tombaugh
Tombaugh was born in Streator, Illinois
what is the definition of a planet? A planet is a body that orbits the Sun, is massive enough for its own gravity to make it round and has "cleared its neighbourhood" of smaller objects approaching its orbit how were they described during antiquity? Ancient Greek astronomers employed the term "asteres planetai" meaning "wandering stars", to describe those starlike lights in the heavens that moved over the course of the year and during the middle ages? Medieval and Renaissance writers generally accepted the idea of seven planets what is one controversy that is going on regarding this? A number of Pluto-as-planet proponents have circulated a petition among astronomers to alter the definition when was this controversial entity discovered? 1930 by whom? Clyde Tombaugh who was he? American astronomer
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Clyde Tombaugh [SEP] Life and career
Tombaugh was born in Streator, Illinois, son of Muron Dealvo Tombaugh, a farmer, and his wife Adella Pearl Chritton. After his family moved to Burdett, Kansas, in 1922, Tombaugh's plans for attending college were frustrated when a hailstorm ruined his family's farm crops. Starting in 1926, he built several telescopes with lenses and mirrors by himself. To better test his telescope mirrors, Tombaugh, with just a pick and shovel, dug a pit 24 feet long, 8 feet deep, and 7 feet wide. This provided a constant air temperature, free of air currents, and was also used by the family as a root cellar and emergency shelter.