Physics · The Life Cycle of a Star - Red Giant Star
What primary change causes a main-sequence star to transition into a Red Giant?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It absorbs a large amount of matter from neighboring planets.
- 2It runs out of hydrogen fuel at its core.✓
- 3Its core temperature drops to absolute zero.
- 4It completely exhausts all its helium fuel in the core.
Correct answer
It runs out of hydrogen fuel at its core.
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