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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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15 set 1923 ano - Edwin Hubble working at Mount Wilson Observatory (photo) and using a 60 inch reflector telescope proves that galaxies are separate systems outside of our own Milky Way and that the Universe was expanding.

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ByKylie Gaskell
9 nov 2018
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15 set 1923 ano
Agora
~ 102 years ago
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