Argh. Hate this. I was following the comic story line (non-canon, I assume) in which Superman had solar poisoning (courtesy of Luthor, of course) and had a very finite time to live, so he was doing all the things he’d ‘put off’. I understand the final issue of this came out, and I can’t find the bloody thing anywhere! So… What happened?!
(The last I saw, Clark had colapsed at his desk, his colleagues were saying he was dead, and Luthor, full of kryptonian-power-goodness, had just smashed through the wall of the daily planet.)
Short version, you’re looking for All-Star Superman #12 which may help you find it.
I copied the following synopsis of issue 12 from Wiki
[spoiler]
Issue 12 opens with Superman somehow on an undestroyed Krypton, wondering why his father Jor-El requested that he come with him. Jor-El reveals that Superman has died and his body is converting itself to solar radio-consciousness. He offers Superman a choice: To remain in this state of fluid consciousness… or to come back to life to stop Luthor, who is currently threatening the Daily Planet staff.
Perry White reveals to Luthor that Solaris has poisoned the sun, turning it blue and endangering all life on the planet. Superman then wakes as Luthor prepares to kill the staff, and attacks Luthor with a gravity gun he acquired over his adventures. Jimmy Olsen then hands Superman a spare costume, everyone believing Clark Kent is at the Fortress of Solitude. After a battle with Luthor Superman reveals that he used the gravity gun, and used the fight itself, to wear down Luthor and quicken the dissipation of his 24-hour super powers. In the last moments of empowerment - his powers waning due to the gravity-gun also warping time - Luthor briefly sees the world as Superman sees it, and weeps as he gains a gleaning understanding. Luthor then attacks the Man of Steel again, only to be beaten into submission. Superman’s transformation into solar-radio consciousness nears completion as he and Lois Lane embrace one last time. Just as Superman converts he proclaims his love to Lois once and for all then shoots into space and fuses with the sun, repairing it.
One year later a memorial service is held and Lois Lane tells Jimmy that Superman will return once he creates an artificial heart for the sun. Superman, still a solar being, is activating or making machinery in the sun. The story concludes with Quintum talking to a P.R.O.J.E.C.T. member about the moving ceremony (claiming that even Luthor was moved) and reveals a large door with a Superman symbol, the “S” modified to resemble the number “2”,on it, hinting that P.R.O.J.E.C.T. is creating a replacement Superman.[/spoiler]
I thought it was a good, solid ending, but it didn’t blow me away as much as the rest of the series did.
Wow. Yeah, that’s sorta disapointing. It almost sounds… Well, the idea of Superman as a deific figure has been tossed around a lot, but this is almost directly martyr / ‘unconquered sun’ material. Sorta disapointing from a series that had really wowed me up until that point.
That’s kind of how I felt. It wasn’t as disappointing as it sounds…I finished the series satisfied, but the ending stopped it from being an all-time favorite and was only a really good story.