character: Isaac Newton
topic: Universal Gravitation and Its Impact on Astronomy
grade: 11
subject: Physics
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character: Galileo Galilei
topic: Early Observations of Celestial Bodies
grade: 11
subject: Physics
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character: Johannes Kepler
topic: Laws of Planetary Motion
grade: 11
subject: Physics
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character: Albert Einstein
topic: Theory of General Relativity and Its Effect on Gravity
grade: 11
subject: Physics
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