Photo licensing: © Harvard-Smithsonian Center for Astrophysics
Date of birth: 1863, December 11 (159 years ago)
Day of death: 1941, April 13 (82 years ago)
Well-known for: astronomer whose cataloging work was instrumental in the development of contemporary stellar classification
Bio: wikipedia EN | CA | DA | ES | EU | FR | IT | JA | NL | PT | RU | SV | ZH
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