character: Isaac Newton
topic: Reflecting Telescope Development
grade: 10
subject: Physics
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character: Galileo Galilei
topic: Telescope Innovations
grade: 10
subject: Physics
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character: James Gregory
topic: Catadioptric Telescope Design
grade: 10
subject: Physics
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character: William Herschel
topic: Improvements in Reflecting Telescopes
grade: 10
subject: Physics
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