Multiple Choice
A protostar will continue to collapse due to gravity until it reaches the main sequence, and then gravitational collapse will stop when _____ begins.
A) the formation of star-globulars
B) atoms degenerate at the core of the star
C) the fusion of hydrogen
D) the fusion of helium
E) the fission of hydrogen
Correct Answer:

Verified
Correct Answer:
Verified
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