Earth-178 was a parallel world in which Superman lost his powers and adopted the secret identity of "The Nova".
- The Has-Been Superman! - Exit Superman-Enter Nova! was originally published as an imaginary story, a story outside of regular continuity. In Crisis on Infinite Earths: The Compendium, it was retconned as having happened on another Earth, .
- The Crisis on Infinite Earths: The Compendium stated this was "revealed as a distinct parallel Earth in The Kingdom #2" making this reality part of hypertime.
- No trivia.
- Characters from Earth-178
- Other things related to Earth-178
- Earth-178's Comic Appearances
- Reality Gallery: Earth-178
Links and References