What is the "safety valve" that operates in normal (nondegenerate) stars?
A) If thermonuclear reactions proceed too quickly, the star runs out of fuel before anything drastic happens.
B) If the stellar gas is suddenly heated, it expands and cools.
C) If the star gets too big, it collapses into a black hole.
D) If the pressure becomes too high, electrons combine with protons to relieve the pressure.
Correct Answer:
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