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42 reactions |  TRIVIA TIME: In 1733, what significant upgrade did the refractor telescope design receive? 樂✨ Find out in Cosmos Safari's podcast episode: "Telescopes 101 - How to Get Started." Listen now: https://bit.ly/4bc8IDf #CosmosSafari #Astronomy #Telescopes #Refractors #Stargazing #AstronomyTips #Podcast | Celestron | Facebook
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