Mxy: Hey Supes I found the rocket you've been trying to find but its stuck in a chaotic dimension that's more volatile than even the 5th Dimension in other words hey supes i cant reach this with my ability. But I know you can, theres always a way right?
Superman: Wink theres always a way
*Eons later, way past the universe's expiration date
Superman: alright after holding together a universe's heat death for untold amount of time with only a fraction of my power Im gonna physically rip apart dimensions to get to the rocket.
*Rips into the 5th dimension then the dimensional bleed where the Phaethon lies.
Superman: Hey guys Im here, and Ill always be with you.