character: Isaac Newton
topic: Universal Gravitation
grade: 6
subject: History
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character: Galileo Galilei
topic: Early concepts of motion and gravity
grade: 6
subject: History
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character: Albert Einstein
topic: Theory of General Relativity and its relation to gravity
grade: 6
subject: History
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character: Johannes Kepler
topic: Laws of Planetary Motion
grade: 6
subject: History
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