character: Nicolaus Copernicus
topic: Heliocentric Theory Challenge to Geocentrism
grade: 9
subject: Mathematics
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character: Galileo Galilei
topic: Support for Heliocentric Theory through Observations
grade: 9
subject: Mathematics
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character: Johannes Kepler
topic: Mathematical Laws of Planetary Motion
grade: 9
subject: Mathematics
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character: Ptolemy
topic: Geocentric Model and its Limitations
grade: 9
subject: Mathematics
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