What fraction of the Sun's mass will be converted into helium overthe next 5 billion years?

Question

This is assuming that the rate of hygrogen fusion in the Sun remains constant. How will this affect the chemical compostion of the Sun?

Answer 1

Hi. Helium is only one product of fusion. As more hydrogen gets used up the Sun will first contract which will make the interior hot enough for the helium to fuse. Other materials form up to iron 56. They predict the Sun will then expand but not go supernova. Not enough mass. The outer gas may blow off and leave a white dwarf.