character: Carl Sagan
topic: The Life Cycle of Stars
grade: 9
subject: Science
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character: Stephen Hawking
topic: Black Holes and Stellar Evolution
grade: 9
subject: Science
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character: Neil deGrasse Tyson
topic: The Universe and Cosmic Evolution
grade: 9
subject: Science
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character: Albert Einstein
topic: Theories of Relativity and Stellar Formation
grade: 9
subject: Science
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