What is the projected main sequence existence duration for low-mass red dwarfs ($0.1 M_ ext{Sun}$)?

Answer

Hundreds of billions to perhaps twelve trillion years

Low-mass stars around $0.1 M_ ext{Sun}$ fuse hydrogen so slowly that their main sequence existence is projected to last for hundreds of billions to perhaps twelve trillion years.

What is the projected main sequence existence duration for low-mass red dwarfs ($0.1 M_	ext{Sun}$)?

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