How would a society go about either preventing our sun in its primary sequence from going into a Red Giant a billion years from now? Or perhaps, accelerating the process of going from main sequence of our start to a red giant prematurely.
What catalysts would have to happen, implemented by humans, so no natural phenomenon could play a part in it, that would have an impact, even slight, on the future processes of the sun's lifecycle.
Any thoughts or help would be great!!!!