h leavitt

Leavitt

[lev-it]
noun
Henrietta, 1868–1921, U.S. astronomer.
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American Heritage
Science Dictionary
Leavitt   (lē'vĭt)  Pronunciation Key 
American astronomer who discovered four novae and over 2,400 variable stars. She also developed a mathematical formula used to measure intergalactic distances.
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