Cecilia Payne-Gaposchkin (10 magg 1900 anni – 7 dic 1979 anni)

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British-born American astronomer and astrophysicist who proposed in her 1925 doctoral thesis that stars were composed primarily of hydrogen and helium, which was a groundbreaking discovery at the time. She became the first person–male or female–to earn a doctorate in astronomy from Harvard University and would later become the first woman to head a department at Harvard as the Chair of the Department of Astronomy.

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