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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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31 dic 1928 anni - Hubble and Humason identify Hubble's Law, proving that the Universe is expanding
Aggiunto al nastro di tempo:
Henrietta Leavitt
By
Shawn Cunning
2 ott 2018
0
0
495
Data:
31 dic 1928 anni
Adesso
~ 96 years ago
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