character: Carl Sagan
topic: The Lifecycle of Stars
grade: 9
subject: Science
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character: Neil deGrasse Tyson
topic: Star Formation and Evolution
grade: 9
subject: Science
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character: Stephen Hawking
topic: Black Holes and Their Role in Stellar Lifecycles
grade: 9
subject: Science
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character: Nicolas Copernicus
topic: Historical Perspectives on Stars and Cosmic Evolution
grade: 9
subject: Science
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