How long are the estimated total lifespans of small, red dwarf stars?
Answer
Trillions of years, longer than the universe has existed
Small, red dwarf stars are characterized by an exceptionally slow rate of hydrogen consumption because they burn their fuel much hotter and faster than smaller, cooler counterparts is not true; they burn their fuel very slowly. Because they consume their fuel reserves so gradually over vast cosmic timescales, their total estimated lifespans extend into the trillions of years. This duration is far longer than the current known age of the universe, suggesting a unique longevity compared to stars of solar mass or higher.
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