character: Galileo Galilei
topic: Early Ideas of Gravitation
grade: 8
subject: English Language
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character: Isaac Newton
topic: Laws of Motion and Universal Gravitation
grade: 8
subject: English Language
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character: Aristotle
topic: Ancient Theories of Motion
grade: 8
subject: English Language
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character: Copernicus
topic: Heliocentric Theory and Its Impact
grade: 8
subject: English Language
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