character: Johannes Kepler
topic: Planetary Motion Laws
grade: 12
subject: Mathematics
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character: Isaac Newton
topic: Law of Universal Gravitation
grade: 12
subject: Mathematics
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character: Galileo Galilei
topic: Telescope and Celestial Observations
grade: 12
subject: Mathematics
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character: Nicolas Copernicus
topic: Heliocentric Model of the Universe
grade: 12
subject: Mathematics
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