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Photo 1955, courtesy Mt. Wilson Observatory: Wilhelm Heinrich Walter Baade: 24 March 1893: 1955 Bruce Medalist: 25 June 1960 - Baade, (Wilhelm Heinrich) Walter (1893-1960)
A German astronomer who classified stars into two distinct population types, found each had a distinct kind of Cepheid variable (a crucial cosmic distance indicator), and deduced ... - German American Corner: BAADE, Wilhelm Heinrich Walter (1893-1960)
BAADE, Wilhelm Heinrich Walter (1893-1960), German-born U.S. astronomer, educated at the University of Göttingen, whose studies of stars in the ANDROMEDA (q.v.) galaxy led him, in ...
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Walter Baade
Encyclopedia Article
Walter Baade (1893-1960), German born U.S. astronomer, educated at the University of Göttingen, whose studies of stars in the Andromeda galaxy led him, in the 1950s, to double the common estimate of the size and age of the universe. Begun at Mount Wilson Observatory in 1931, these studies established two major types of stars: the younger, hotter, Population I type and the older, cooler, Population II (see Milky Way). In his career in Germany prior to 1931, Baade discovered the asteroids Icarus and Hidalgo.
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