What is the approximate main sequence lifespan for a star with 25 times the mass of the Sun?

Answer

About 7 million years

The text provides a specific example illustrating the extremely compressed lifespan of a highly massive star. A star possessing 25 times the mass of the Sun, which places it firmly within the category of the most massive stellar giants, is projected to have a main sequence existence lasting only around 7 million years. This duration contrasts sharply with that of the Sun, a G-type star, which enjoys a stable existence lasting approximately 10 billion years. This comparison highlights the severity of the relationship between high mass and rapid fuel exhaustion, driven by the intense fusion rates required to support such immense stellar structures against gravitational collapse.

What is the approximate main sequence lifespan for a star with 25 times the mass of the Sun?

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