Publication history of Superman written by Alan Moore with art by Curt Swan. Although the new Modern Age version of Superman is said to have already been active for many years, most previous Superman appearances and elements were rendered out of continuity by John Byrne's "The Man of Steel". Later stories such as "" bring many of the Silver Age elements back into continuity. In Byrne's version, Superman came from the planet Krypton which was re-imagined as a cold, sterile world in deep contrast to the wonderworld of the past 48 years. Once Kal-El's rocketship (containing genetic materials and a birthing-matrix which resulted in
Superman: Doomed planet while Superman creates a new plan: use the Phantom Zone projector to seal both Earth and Brainiac's mothership in the Phantom Zone to give the heroes enough time to defeat Brainiac. Discovering the heroes' strategy, Brainiac destroys the Justice League satellite, disabling the Phantom Zone projector, and attempts to crash his mothership into the planet. Superman and Martian Manhunter push the mothership away from the planet, but Mongul and Non escape from the Phantom Zone and prepare to attack Earth. Although Mongul and Non have escaped from their Phantom Zone, Brainiac's invasion makes them quickly go back. Meanwhile, Superman