character: Professor Alan Carter
topic: The Hertzsprung-Russell Diagram Explained
grade: 9
subject: Science
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character: Dr. Emily Foster
topic: Understanding Stellar Classification
grade: 9
subject: Science
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character: Ms. Sarah Thompson
topic: The Life Cycle of Stars
grade: 9
subject: Science
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character: Mr. James Lee
topic: The Importance of Spectroscopy in Astronomy
grade: 9
subject: Science
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