character: Stephen Hawking
topic: The Possibility of Extraterrestrial Intelligence
grade: 10
subject: Science
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character: Carl Sagan
topic: Fermi Paradox
grade: 10
subject: Science
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character: Arthur C. Clarke
topic: Astrobiology and the Search for Life
grade: 10
subject: Science
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character: Enrico Fermi
topic: The Great Silence in the Universe
grade: 10
subject: Science
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