(Submitted February 22, 2012)
How long is the longest and shortest length of life for red dwarf stars?
Thanks for your question. Red dwarf stars have lifetimes exceeding the
present age of the Universe, burning for about 100 billion years (for
red dwarf stars with about 1/4 of the mass of the Sun) to 10 trillion
years (stars with 1/10 of the mass of the Sun).
Hope that answers your question!
-Antara & Bret
for "Ask an Astrophysicist"