AST101H1 Lecture Notes - Lecture 6: Body Force, Tholin, Thick Disk
31 May 2016
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Name in roman mythology, pluto (greek: hades) is the god of the underworld of the dead. Discovery the idea that a distant, ninth planet might exist emerged shortly after the discovery of neptune. The person most identified with a search for planet x was. Lowell and his colleagues conducted a photographic search for such a planet for years without success. The search resumed in 1929, thirteen years after. Clyde w. tombaugh 2, a young astronomer, was hired to take an exhaustive series of photographs and to examine them for objects that were not stars. He exposed 14-by-17-inch plates by night, and by day, examined the images in an instrument called a blink comparator. By rapidly alternating a magnified view of two photographs of the same area of the sky taken at different times, any object that was not a distant star appeared to move against the background star field.
