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Cecilia Payne-Gaposchkin could have walked by you on the sidewalk, her face calm…

Cecilia Payne-Gaposchkin could have walked by you on the sidewalk, her face calm, her eyes distant, and you might never have guessed that you were in the presence of a mind that had unlocked one of the universe’s greatest secrets. In 1925, with her doctoral thesis Stellar Atmospheres, she revealed something astonishing: hydrogen, the simplest […]

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