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jul 17, 1609 - Galileo Galilei decides to use the telescope for astronomical purposes.

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Galileo Galilei makes his own refracting telescope and gets the brilliant idea of using it for astronomical purposes. This was also the year he published his very own book and mentions his new creation in it.

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The Telescope Timeline

ByKatherine Carlos
21 Nov 2018
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Date:

jul 17, 1609
Now
~ 416 years ago

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