character: Stephen Hawking
topic: Black Holes and their relation to General Relativity
grade: 9
subject: Science
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character: Albert Einstein
topic: General Relativity and its implications for Black Holes
grade: 9
subject: Science
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character: Carl Sagan
topic: The impact of Black Holes on the universe
grade: 9
subject: Science
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character: Isaac Newton
topic: Foundational principles of gravity that lead to General Relativity
grade: 9
subject: Science
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