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American Astronomer Henrietta Swan Leavitt

March 19, 2025

Henrietta Swan Leavitt (born July 4, 1868, Lancaster, Massachusetts, U.S.—died December 12, 1921, Cambridge, Massachusetts) was an American astronomer known for her discovery of the relationship between period and luminosity in Cepheid variables, pulsating stars that vary regularly in brightness in periods ranging from a few days to several months. FOR MORE

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