Beginning of Prime?
Just occurred to me, this is a perfect beginning to Superman Prime. We know Prime is the original "Kent" Superman, and that he spends thousands of years in the sun coming out more powerful then any god, a universal being capable of anything (as if he wasn't already, lol).
Just a thought. "Fixing" the sun should take thousands of years, even for Superman, and obviously, inside the sun he would only become more and more powerful, so I think it makes sense, eventually so powerful that he would easily figure out how to fix the sun without having to actually be inside it. And thus, the birth of Superman Prime, the ultimate comic book power.
Oh, and those talking about science on this board, please stop the insanity, this is comics. I'm an astrophysicist, if I can overlook it, so can you.
"You were assimilated, resistance was futile!"