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7h 53min, jan 18, 1464 y - Galileo Galilei invented an improved telescope which let him observe the planets and stars in much greater depth
Added to timeline:
Famous Astronomers timeline
By
Brianna Keltz
4 Dec 2017
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400
Date:
7h 53min, jan 18, 1464 y
Now
~ 562 years ago
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