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Why does a star of
average mass expand
into a red giant?

User Brasileric
by
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1 Answer

6 votes

Answer:

When a star expands, the surface of the star becomes cooler as well as redder. Hence, forming the red giant.

Step-by-step 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.

User Ashish Dwivedi
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6.0k points