Why Does Birth Mass Almost Decide a Star's Whole Life?

Why do heavier stars burn faster even though they contain more fuel?

Connect mass with core pressure, fusion rate, luminosity, lifetime, and final remnant.

Four newly formed stars from low to high birth mass glow with visibly different colour, size, and intensity in one stellar nursery. — Vastward scientific reconstruction. The stars are compared for physical character, not shown to scale or at one real distance.

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