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Review Chapters 5-11
•Chapter 7: The Sun
–Atmospheric Structure
•Temperature, density, etc., with radius
–Sunspots/Magnetic Phenomena
•What are they?  Why do they exist?
–Nuclear Fusion – proton-proton chain
•What is it?  How does it produce energy?
–Solar Neutrino “Problem”
•What is it?  Is it still a problem?