character: Professor Smith
topic: Understanding Redshift in Astronomy
grade: 11
subject: Physics
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character: Dr. Emily Johnson
topic: Doppler Effect and its Role in Astronomy
grade: 11
subject: Physics
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character: Mr. Harris
topic: Galaxies and the Expansion of the Universe
grade: 11
subject: Physics
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character: Ms. Roberts
topic: Light Waves and Spectroscopy in Astronomy
grade: 11
subject: Physics
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