character: Georges Lemaître
topic: Origin of the Universe
grade: 9
subject: Science
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character: Albert Einstein
topic: Theory of Relativity
grade: 9
subject: Science
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character: Edwin Hubble
topic: Hubble's Law and Expanding Universe
grade: 9
subject: Science
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character: Stephen Hawking
topic: Black Holes and Cosmology
grade: 9
subject: Science
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