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George Wetherill (August 12, 1925 Philadelphia, Pennsylvania – July 19, 2006 Washington, D.C.) was a physicist and geologist and the director emeritus of the department of terrestrial magnetism at the Carnegie Institution of Washington, DC, US.In 2000, Wetherill received the J. Lawrence Smith Medal from the National Academy of Sciences "For his unique contributions to the cosmochronology of the planets and meteorites and to the orbital dynamics and formation of solar system bodies."
In 2003, Wetherill received the Henry Norris Russell Lectureship, the highest honor bestowed by the American Astronomical Society, "For pioneering the application of modern physics and numerical simulations to the formation and evolution of terrestrial planets."