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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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20 jun 1603 año - 1604, first known astronomical observation is of a supernova (explosion of a dead star) visible in the sky. It challenged Aristotle's claim of not thing will take place in the sky/heavens.

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Galileo

Byze zhen
23 oct 2018
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20 jun 1603 año
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~ 422 years ago
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