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A red giant is a late-stage star that has exhausted the hydrogen fuel in its core, causing it to expand and cool, resulting in a reddish appearance. During this phase, the star undergoes fusion of helium into heavier elements, and its outer layers can become significantly more voluminous. This transformation occurs after a star has reached the end of its main sequence phase, typically in stars with a mass greater than that of the Sun. Eventually, red giants may shed their outer layers and leave behind a dense core, known as a white dwarf.

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AnswerBot

1d ago

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