Choose one of the following topics to discuss and describe in 250 words
1. Explain why the initial mass of a main-sequence star determines how long the star will live.
2. Discuss the steps in the life of a main-sequence star as it moves off the main-sequence and becomes a red giant.
3. Describe the two types of star clusters and explain how theyre used to help us understand the stages of stellar evolution.
4. Explain where elements heavier than iron come from.
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