The Man of Steel (comics) and archenemy Lex Luthor, who was re-branded from a mad scientist to a powerful businessman and white-collar criminal. The series's legacy persisted, as it set the new status quo for all of the ongoing Superman comic series for many years after it was published. The story stayed in DC Comics continuity as the origin of Superman until it was expanded upon in the 2003 limited series "", which stayed canon until 2009. The title is a reference to one of Superman's nicknames which touted his invulnerability making him the "Man of Steel." It was later used as the title of
Known Space Known Space Known Space is the fictional setting of about a dozen science fiction novels and several collections of short stories written by Larry Niven. It has also become a shared universe in the spin-off "Man-Kzin Wars" anthologies. ISFDB catalogs all works set in the fictional universe that includes Known Space under the series name Tales of Known Space, which was the title of a 1975 collection of Niven's short stories. The first-published work in the series, which was Niven's first published piece was "The Coldest Place", in the December 1964 issue of "If" magazine, edited by Frederik Pohl. This