What catastrophic event concludes the life of a massive star after its core fuel is spent?

Answer

Type II supernova explosion

Massive stars face a violent end; when the iron core collapses, it triggers a Type II supernova explosion that scatters heavy elements across the galaxy.

What catastrophic event concludes the life of a massive star after its core fuel is spent?

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Which Type Of Star Has The Shortest Life Span? - Physics Frontier

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