A star less massive than the Sun will have
A) an identical lifetime as the Sun because although its overall mass is lower, the mass of its nuclear burning core is the same
B) a shorter lifetime because it has less fuel to burn
C) a longer lifetime because although its overall mass is lower, the mass of its nuclear burning core is larger
D) a longer lifetime because its central core is cooler and less dense

Question

Quizplus · Accepted Answer

Stars less massive than the Sun burn their fuel more slowly because their central cores are cooler and less dense, leading to a longer lifetime.

A Star Less Massive Than the Sun Will Have