Clyde Tombaugh Autographed Sketch of Solar SystemSigned sketch of the Solar System from astronomer Clyde Tombaugh Learn more about this item here American astronomer, Clyde Tombaugh (1906 1997) is most famous for discovering the planet Pluto in 1930. During his career he also discovered many asteroids, variable stars, star clusters, galaxy clusters and a galaxy supercluster. This is an original sketch by Clyde Tombaugh showing the orbit of Pluto in comparison to the orbits of Earth, Saturn and
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