Stars evolve primarily because
A) they convert all their mass to energy.
B) they lose all their mass into space.
C) their core temperatures decrease steadily as they evolve.
D) they use up the fuel in their cores.
E) they run out of rotational energy.

Question

Quizplus · Accepted Answer

Stars evolve primarily because they use up the hydrogen fuel in their cores, leading to changes in their structure and energy production processes.

Stars Evolve Primarily Because