Wilhelm Heinrich Walter Baade
1893-1960
German-American astronomer who classified stars into two different types: Population-I (hot, younger blue stars) and Population-II (cool, older red stars). His ...
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Walter Baade was born on March 24, 1893, in Schröttinghausen, Westphalia, Germany. While still in high school, he began to cultivate his interest and talents in astronomy. He obtained a Ph.D. at ...
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Wilhelm Heinrich Walter Baade
Wilhelm Heinrich Walter Baade