Galileo and the Telescope | Modeling the Cosmos | Articles and Essays | Finding Our Place in the Cosmos: From Galileo to Sagan and Beyond | Digital Collections | Library of Congress
History of the telescope - Wikipedia
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The history of the telescope | Royal Museums Greenwich
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Curious Questions: How did Galileo take the credit for inventing the telescope despite being beaten to it by two Dutchmen and an Englisman? - Country Life
History of the telescope - Wikipedia
Hans Lipperhey - Wikipedia
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