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15 март 1868 г. - Henrietta Swan Leavitt  (1868 -1921) Va descobrir que les cefeides de major lluminositat intrínseca tenien llargs períodes (1912)

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Científics de l'Univers de Maria Dotú (1r btx A)

ByMaria D
7 янв 2018

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15 март 1868 г.
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~ 156 г назад
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