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Galileo | Biography, Discoveries, Inventions, & Facts | Britannica
What Did Galileo Invent? - Universe Today
Galileo Galilei - HISTORY
Galileo Galilei's Invention & Contributions - Sciencing
Galileo Galilei - Wikipedia
Galileo - Telescope, Quotes & Discoveries - Biography
Galileo Galilei: Biography, inventions & other facts - Space.com
Galileo Galilei - World History Encyclopedia
How Galileo Changed Your Life - Biography
Galileo Galilei The Law of the Pendulun - ThoughtCo