Red dwarves.
The stars that have the longest lifetimes are the smaller, cooler stars - red dwarfs. They are just about massive enough to sustain nuclear fusion of hydrogen fuel, but consume fuel at a very low rate. They could last for hundreds of billions of years before they exhaust their fuel.
The cells that last the longest are nerve cells, they last a lifetime
When a star is at the end of its lifetime its mass increases.
A lifetime!
Suns
stars in the spectral classes M, L, T or Y (the last 3 are subclass brown dwarf classifications) will last the longest because of how slowly they burn fuel. red dwarves in class M are likely to burn for 100 Billion years, ten times longer than our star. and brown dwarves, which actually do produce some light, will burn longer than that, perhaps 1 TRILLION years or longer!
Live Mas that is your hint to who I am
The approximate lifetime of a small star, like a red dwarf, can range from tens of billions to over a hundred billion years. These stars burn their hydrogen fuel slowly, allowing them to exist for much longer than larger stars, which have shorter lifespans due to their more rapid fusion processes. In contrast, larger stars may only last a few million to a few billion years before exhausting their fuel. Overall, small stars are among the longest-lived objects in the universe.
The Galapagos giant tortoise can live for over 200 years. It is the animal with the longest lifespan that has been classified.
Main sequence
The Longest Day
When a star is at the end of its lifetime its mass increases.