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
Superman: Earth One of an interview he claims he conducted with Superman, and he bonds with his new colleagues. Public opinion of Superman is mixed: some like him and see him as a hero; others do not trust him because he was the cause of the invasion. In the Arctic, Superman has hidden his ship in a secret cave, and its sentience activates and tells him his mission: to survive, use his powers well and wisely, and to avenge the murder of his homeworld. At the close of the story, Lois and Jim are on the "Daily Planet" rooftop discussing how Superman has