The core hydrogen fusion phase will span approximately 12 billion years for a star like the Sun. How long will the core helium fusion phase last?
A)12 billion years
B)1 billion years
C)100 million years
D)1 million years

Question

Quizplus · Accepted Answer

The core helium fusion phase, also known as the red giant phase, lasts much shorter than the hydrogen fusion phase, typically around 100 million years for a star like the Sun.

The Core Hydrogen Fusion Phase Will Span Approximately 12 Billion