The origin of Superman and his superhuman powers have been a central narrative for Superman since his inception, with the story of the destruction of his home planet of Krypton, his arrival on Earth and emergence as a superhero evolving from Jerry Siegel's original story into a broad narrative archetype over the course of Superman's literary history and as the character's scope continues to expand across comics, radio, television and film.
The original story was written by Siegel and illustrated by Joe Shuster, and published as a part of the character's first appearance in Action Comics #1 (June 1938). As more stories were published, more details about the original story were established. These stories explored individual details, such as the planet Krypton, the source of Superman's powers and his relationships with supporting characters. Because continuity was looser during the Golden Age and the Silver Age, many of these stories contradicted each other.
As Superman was adapted into other media, his origin story has been frequently retold. These origin stories adhere to the basic framework created by Siegel and Shuster, with minor variations made to serve the plot or to appeal to contemporary audiences. Some of the details created for these adaptations influenced the origin story in the mainstream comic series.
In more recent years, the origin story has been revamped in the comic books several times. In 1985, DC Comics published Crisis on Infinite Earths, which created the opportunity to definitively revise the history of the DC Universe. Superman's origin was subsequently retold in the 1986 limited series The Man of Steel, written and drawn by John Byrne. The story was later removed from continuity ("retconned") and replaced with the Superman: Birthright limited series in 2003 and 2004, written by Mark Waid and drawn by Leinil Francis Yu, as Superman's official origin. After the Infinite Crisis limited series in 2005 and 2006, Superman's origin was revised yet again, unfolding throughout Superman's regular publications and the Superman: Secret Origin mini-series in 2009 and 2010.