Cecilia Payne-Gaposchkin

British-born American astronomer and astrophysicist who proposed in her 1925 doctoral thesis that stars were composed primarily of hydrogen and helium.


https://en.wikipedia.org/wiki/Cecilia_Payne-Gaposchkin



By Smithsonian Institution from United States - Cecilia Helena Payne Gaposchkin (1900-1979)Uploaded by Fæ, No restrictions, https://commons.wikimedia.org/w/index.php?curid=18877957

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