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Kenneth Edgeworth

FEB 26, 2016
Physics Today

Today is the birthday of Irish astronomer Kenneth Edgeworth, born in 1880. He’s best known for his 1943 proposal of a reservoir of icy objects beyond Neptune. Eight years later astronomer Gerard Kuiper came up with a more detailed prediction. Today we group those distant solar system bodies, including Pluto, Eris, and Makemake, into the Kuiper belt. Some astronomers, however, go with the term Edgeworth-Kuiper belt.

Date in History: 26 February 1880

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