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Henrietta Swan Leavitt

Henrietta Swan Leavitt

Henrietta Swan Leavitt was an American astronomer who discovered the relation between the luminosity and the period of Cepheid variable stars. A graduate of Radcliffe College, Leavitt started working at the Harvard College Observatory as a "computer" in 1893, examining photographic plates in order to measure and catalog the brightness of stars. Though she received little recognition in her lifetime, it was her discovery that first allowed astronomers to measure the distance between the Earth and faraway galaxies. She explained her discovery: “A straight line can readily be drawn among each of the two series of points corresponding to maxima and minima, thus showing that there ... more on Wikipedia

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