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
Aurora (fictional planet) Aurora at its height had a population of 200 million humans and 10 billion robots. The head of its planetary government was called the Chairman. The largest city on the planet was Eos (which also means "dawn"), the administrative and robotic center of Aurora, where Han Fastolfe and Gladia Solaria lived. The University of Eos and the Auroran Robotics Institute were both located within Eos. We see the planet at its height in "The Robots of Dawn". In "Prelude to Foundation", we learn that at least some of its inhabitants emigrated to Trantor, settling in the Mycogen Sector. The descendants