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jan 1, 1655 - Christian Huygens creates his own, tubeless telescope in 1655.
Description:
Which is then used to discover Saturn's moon Titan (renamed Titanin 1847).
Added to timeline:
Project Timeline
By
Petros Flagg
19 Jan 2020
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0
245
Date:
jan 1, 1655
Now
~ 371 years ago
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