Kalorite

Kalorite is a fictional element appearing in the DC Comics universe. It was created by the writer Grant Morrison and first appeared in the comic book series All-Star Superman, issue #7, in 2006. Kalorite is depicted as a rare and highly unstable element with unique properties. In the context of the All-Star Superman story, Kalorite is discovered to be the source of Superman's extraordinary powers, particularly his ability to absorb solar energy.

The element is described as being incredibly potent and difficult to contain, often exhibiting dangerous energetic reactions. It is central to the plot of All-Star Superman, where Lex Luthor attempts to harness its power for his own nefarious purposes. The instability of Kalorite is a significant factor in the narrative, presenting both immense potential and considerable risk. Its existence in the comic's mythology serves to provide a pseudo-scientific explanation for Superman's abilities within that specific reimagining of the character.

While Kalorite is a significant plot device in All-Star Superman, it is not a widely recurring element in other DC Comics titles. Its origins and specific scientific properties are largely confined to the narrative established by Grant Morrison. The concept of Kalorite explores themes of power, origin, and the potential dangers associated with advanced or alien technologies.