Which process is responsible for fusing helium into heavier elements like carbon and oxygen inside massive stars?

Answer

Triple-alpha process

When helium fusion ignites in massive stars after hydrogen depletion, it is sometimes referred to as the triple-alpha process, where three helium nuclei combine to form carbon.

Which process is responsible for fusing helium into heavier elements like carbon and oxygen inside massive stars?
astronomystarsElementsFusionnucleosynthesis