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
Mongo (fictional planet) the Arlene Williamson version. Starting April 22, 1935, the radio serial "The Amazing Interplanetary Adventures of Flash Gordon", began airing. The series featured stories set on Mongo, closely following the plot of the comic strip. The 1936 serial depicts Mongo as a rogue planet drifting towards Earth. The serial's Mongo is a wild, rocky planet filled with monsters. The second Flash Gordon serial was set on Mars, but the third returned to Mongo. In "Flash Gordon Conquers the Universe" Flash and his friends travel to Mongo's land of Frigia to find a cure for the Purple Death, which is ravishing