Yeah its a technicality really. Once hydrogen and helium has been depleted the fusion carries on with heavier elements until iron is created which absorbs, rather than outputs energy, meaning the star collapses under it's own gravity and the resulting bounce back causes a supernovae More a hobby than actual qualifications Edit. If the star has enough mass

If it's too small, it just fizzles out. Quite like my knowledge on these matters. :P

I best do some work, nice chat add me if your ps4. Psn same as username

Spot on, after increasing massively in size

That's when it's a... red giant?...

Yeah which is the eventual outcome for our sun