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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1922 año - Ernst Opik demonstrates the Andromeda nebulae is outside the Milky Way (1922)
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Science
By
Stewart
4 ago 2017
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1029
fecha:
1 ene 1922 año
Ahora mismo
~ 103 years ago
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