What led to the invention of the telescopes? - Quora
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/GettyImages-960773850-85f50747071140b7bdc10eaf65fd55d8.jpg "The Basics of Telescopes")
The Basics of Telescopes
Math 309-Refracting Teleschope-by May Wong 76956994
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Newton's Reflecting Telescope | Multiwavelength Astronomy
Newton's Reflecting Telescope | Multiwavelength Astronomy
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according to some accounts the first optical telescope was accidentally invented in the 1600s off 78% - medpharmres.com
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