character: Isaac Newton
topic: Newtonian Physics and Its Impact on Astronomy
grade: 8
subject: History
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character: Galileo Galilei
topic: Observations that supported Newton's theories
grade: 8
subject: History
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character: Johannes Kepler
topic: Laws of Planetary Motion and Connection to Newton's Laws
grade: 8
subject: History
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character: Albert Einstein
topic: Developments in Physics Following Newton's Work
grade: 8
subject: History
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