character: Isaac Newton
topic: Newtonian Telescopes and Their Impact on Astronomy
grade: 10
subject: Physics
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character: Galileo Galilei
topic: The Use of the Telescope in Early Astronomical Discoveries
grade: 10
subject: Physics
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character: Carl Sagan
topic: The Role of Telescopes in Modern Cosmic Exploration
grade: 10
subject: Physics
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character: Edwin Hubble
topic: Hubble's Discoveries and the Importance of Space Telescopes
grade: 10
subject: Physics
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