Question

Why are there many more Main-Sequence stars than Red Giants?

Answer 1

Eventually, as stars age, they evolve away from the main sequence to become red giants or supergiants.

The core of a red giant is contracting, but the outer layers are expanding as a result of hydrogen fusion in a shell outside the core. The star gets larger, redder, and more luminous as it expands and cools.

Answer 2

ANSWER

Red Grand saree styles that have exhausted the supply of hydrogen in their course and have begin thermonuclear fusion of hydrogen in a shell surrounding the code. They have ready items to hundreds of times larger than that of Sun. However, their outer envelope is lower in temperature, giving them a reddish orange hue.

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