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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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31 dic 1908 anni - Publishes theory on correlation between period and luminosity in Cepheid variables
Aggiunto al nastro di tempo:
Henrietta Leavitt
By
Shawn Cunning
2 ott 2018
0
0
497
Data:
31 dic 1908 anni
Adesso
~ 116 years ago
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