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1. In what ways do the spectra of Type Ia supernovae differ from Type II supernovae? What do binary star systems

have to do with Type Ia supernovae?

2. Summarize how the evolution of a massive star differs from that of a sun-like star in what fusion cycles occur in the massive stars' cores. A sun-like star ends up as a carbon white dwarf. What are the fusion steps that get to iron in the cores of massive stars?

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