description Henrietta Hill Swope Overview
Henrietta Hill Swope was an American astronomer associated with the Carnegie Institution whose work helped establish distances beyond the Milky Way. She made photometric measurements of Cepheid variable stars in nearby galaxies, using the relationship between a Cepheid's pulsation period and intrinsic brightness to calibrate the extragalactic distance scale. Her name is also attached to the Swope Telescope at Las Campanas Observatory in Chile.
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