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Second stage of fusion: Medium/high mass stars: 1. What will happen when the first fuel runs...

Second stage of fusion:

Medium/high mass stars:

1. What will happen when the first fuel runs out? what will fuse next? (second stage of fusion)

2. what process do medium mass and high mass stars use to fuse the second stage of fusion?

3. What is degeneracy and how does it help medium mass stars to ignite the second stage of fusion?

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