character: Kepler
topic: Kepler's Third Law
grade: 10
subject: Physics
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character: Newton
topic: Gravitational Forces and Orbits
grade: 10
subject: Physics
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character: Copernicus
topic: Heliocentric Model of the Solar System
grade: 10
subject: Physics
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character: Galileo
topic: Motion of Celestial Bodies
grade: 10
subject: Physics
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