character: Kip Thorne
topic: Black Holes and Gravitational Waves
grade: 6
subject: Science
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character: Albert Einstein
topic: Theory of Relativity and Gravity
grade: 6
subject: Science
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character: Stephen Hawking
topic: Black Hole Information Paradox
grade: 6
subject: Science
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character: Carl Sagan
topic: The Cosmos and Gravitational Phenomena
grade: 6
subject: Science
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