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Henrietta Hill Swope, American astronomer and academic (died 1980)
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Henrietta Hill Swope
American astronomer (1902–1980)
Henrietta Hill Swope was an American astronomer who studied variable stars. In particular, she measured the period-luminosity relation for Cepheid stars, which are bright variable stars whose periods of variability relate directly to their intrinsic luminosities. Their measured…Source: Wikipedia (CC BY-SA)