Young Star dies

A young British TV presenter died yesterday I think, it is very sad, she is not the only young Star that has died, many yellow dwarf stars like our own sun die after shining 10 billon years and only use up a small fraction of the Hydrogen in their cores. Our own Yellow Dwarf star called the Sun is middle aged, it will die in 5 billion years and become unstable in half that time. 

However, every red dwarf star that has formed in the universe has a long way to go. Red Dwarf stars are smaller than the sun, usually about one third the mass, some are about half I think and they are able to use up all of their Hydrogen so they shine in main sequence for more than 100 billion years. This means every one of them is a juvenile. This also means we don't know the life cycle of them, we don't know what they do when they are middle aged or when they are old. All we know for certain is that they're very dim and last a long time and they are the most common type of star. 

This is just another thing that is hidden from mankind. What happens to Red Dwarf stars when they age.