Superman (Earth-One) details on the Earth-One Superman's origin and childhood/teenage years, see Superboy (Kal-El)." The Earth-One Superman's origin story was retold in various stories; the most prominent retellings were in "Superman" (volume 1) #146 (July 1961), "Limited Collectors' Edition" #C-31 (November–December 1974), and "Action Comics" #500 (October 1979). As recounted in these retellings, Superman was born Kal-El on the planet Krypton. Upon learning of Krypton's imminent destruction, his father Jor-El and mother Lara sent Kal-El in an experimental rocket to Earth moments before the planet exploded. Landing outside of the town of Smallville, Kal-El was found and adopted by an elderly farm
Superman (Earth-Two) that he is this world's peerless champion." Superman (Earth-Two) Superman of Earth-Two is an alternate version of the fictional superhero Superman, who appears in American comic books published by DC Comics. The character was introduced after DC Comics created Earth-Two, a parallel world that was retroactively established as the home of characters whose adventures had been published in the Golden Age of comic books. This allowed creators to publish Superman comic books taking place in current continuity while being able to disregard Golden Age stories, solving an incongruity, as Superman had been published as a single ongoing incarnation since inception.