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Cecilia Payne-Gaposchkin, born in 1900. In her doctoral thesis she concluded stars are primarily composed of hydrogen & helium, an idea dismissed by the establishment of the day. It was later described as "the most brilliant PhD thesis ever written in astronomy."
@Jezibaba But, she's a woman.
@dauphin87 smartass
@Jezibaba
Once in a great while someone comes along to remind us what humans are capable of.