What percentage of a star's total lifetime is spent on the main sequence?
A)90%
B)10%
C)100%
D)20%
E)50%

Name: What percentage of a star's total lifetime is spent on the main sequence? A)90% B)10% C)100% D)20% E)50%
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Quizplus · Accepted Answer

The main sequence is where a star spends the majority of its lifetime. This is where hydrogen fusion occurs and the star maintains a stable equilibrium between gravity pulling inward and fusion pushing outward. The main sequence typically lasts for about 90% of a star's total lifetime.

What Percentage of a Star's Total Lifetime Is Spent on the Main