character: Galileo Galilei
topic: Contributions to Physics and Astronomy
grade: 8
subject: History
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character: Aristotle
topic: Early Theories of Motion
grade: 8
subject: History
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character: Nicolaus Copernicus
topic: Heliocentric Model of the Solar System
grade: 8
subject: History
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character: Johannes Kepler
topic: Laws of Planetary Motion
grade: 8
subject: History
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