The Adventures of Superman (radio) home planet of Krypton is located on the far side of the sun, as opposed to a distant star system as it is in most stories. During the journey to Earth, baby Kal-el grows into an adult and emerges fully grown from his ship after it lands on Earth. He is never adopted by the Kents but immediately begins his superhero career. This was eventually retconned in later episodes to match the narrative of the comic books. This serial introduced the fictional mineral kryptonite, the radiation from which can weaken and even (in some continuities) kill Superman. Aside from giving
Adventures of Superman (TV series) and other villains in the fictional city of Metropolis while masquerading "off duty" as "Daily Planet" reporter Clark Kent. Lois Lane and Jimmy Olsen, Clark's colleagues at the office, often find themselves in dangerous situations that only Superman's timely intervention can resolve. Its opening theme is known as "The Superman March". In 1987, selected episodes of the show were released on VHS. In 2006, the series became available in its entirety on DVD to coincide with the DVD release of "Superman Returns", the first Superman feature film to emerge after almost two decades without such a movie. The feature film