Which spectral classes represent the hottest and most luminous stars with the shortest lifespans?

Answer

O-type and B-type stars

O-type and B-type stars are the stellar heavyweights that burn through their fuel most furiously, leading to the shortest lifespans measured in mere millions of years.

Which spectral classes represent the hottest and most luminous stars with the shortest lifespans?

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

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