What is the single most crucial factor dictating how long a star will shine?

Answer

Its initial mass

The text explicitly states that the single most crucial factor dictating a star's lifespan is its initial mass. This relationship is counterintuitive, as higher mass leads to shorter lifespans.

What is the single most crucial factor dictating how long a star will shine?

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

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