What specific stellar type is far less massive than the Sun and burns fuel for trillions of years?
Answer
Red Dwarfs
The cosmos exhibits incredible stellar diversity, featuring types vastly different from our Sun. Red Dwarfs represent one extreme of low-mass stars. They are significantly less massive than the Sun and possess a slower rate of nuclear fusion. Because they burn their hydrogen fuel much more slowly and efficiently over exceptionally long timescales, these dim stars are predicted to remain active and shining steadily for trillions of years, far exceeding the lifespan of our Sun, which is expected to last only about ten billion years total.
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