Question

what is meant by red gaint??

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Answer 1

when all the hydrogen in a stars core is used up and the fusion stops. This means there is no longer an outward light pressure to counteract the inward pressure pulling the star together. The life of the star continues when the shell of hydrogen around the core ignites and causes the star to massively increase in size. The star then becomes a red giant and can be up to 100 times bigger than it was in its main-sequence stage. This stage of stellar evolution only lasts a few hundred million years. Its life-span is so short because the star only has so many layers of helium to consume before it runs out and becomes a white dwarf.

Answer 2

Explanation:

red giant means aa red color giant