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In the late 18th century, John Goodricke, a pioneering but largely uncelebrated astronomer, made an observation that would shape our understanding of the cosmos. From the garden of his home in England, Goodricke meticulously recorded the varying brightness of the star Algol. Unlike other stars that shone steadily each night, Algol's light seemed to pulse, fading and brightening at regular intervals. This phenomenon puzzled astronomers and stargazers alike. Goodricke proposed that Algol's dimming
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