character: Galileo Galilei
topic: Early Use of Telescopes
grade: 10
subject: Physics
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character: Isaac Newton
topic: Advancements in Optics and Telescopes
grade: 10
subject: Physics
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character: Johannes Kepler
topic: Development of the Keplerian Telescope
grade: 10
subject: Physics
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character: Tycho Brahe
topic: Contributions to Astronomy
grade: 10
subject: Physics
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