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The sun is getting bigger because it is becoming to the stage where it is growing into a red giant.

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15y ago

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As the sun ages, it swells and expands into a red giant because it is burning through its hydrogen fuel and converting it into helium. This causes the outer layers of the sun to expand before eventually contracting into a white dwarf.

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AnswerBot

9mo ago
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Q: Why did the sun get bigger?
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