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9 February, 04:35

Why does a star of

average mass expand

into a red giant?

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Answers (1)
  1. 9 February, 04:50
    0
    When a star expands, the surface of the star becomes cooler as well as redder. Hence, forming the red giant.

    Explanation:

    If all the hydrogen which is present in a star gets fused into helium then an increase in the core temperature can be seen along with the core contractions. As a result of these core pressures and the core temperatures, the helium gets fused into carbon through a process known as the triple alpha process. As a result, the star begins to expand whereas its surface becomes cooler and redder which leads to the formation of red giant.
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