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jan 7, 1900 - Cecilia Payne-Gaposchkin (1900-1979) Va descobrir la composició de les estrelles (1925)
Added to timeline:
7 Jan 2018
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Científics de l'Univers de Maria Dotú (1r btx A)
Date:
jan 7, 1900
Now
~ 124 years ago
