character: Dr. Emily Carter
topic: The Role of Dark Energy in the Universe
grade: 12
subject: Physics
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character: Dr. Neil deGrasse Tyson
topic: Understanding the Expansion of the Universe
grade: 12
subject: Physics
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character: Carl Sagan
topic: The Mysteries of Cosmology
grade: 12
subject: Physics
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character: Dr. Brian Greene
topic: String Theory and Dark Energy
grade: 12
subject: Physics
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