character: Galileo Galilei
topic: Telescope and Celestial Observations
grade: 12
subject: Mathematics
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character: Johannes Kepler
topic: Laws of Planetary Motion
grade: 12
subject: Mathematics
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character: Isaac Newton
topic: Gravitational Theory
grade: 12
subject: Mathematics
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character: Copernicus
topic: Heliocentric Model
grade: 12
subject: Mathematics
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