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
Metropolis, Illinois the weekend. The local newspaper is named "The Metropolis Planet", inspired by "The Daily Planet", the fictional paper in the Superman comics and other Superman media. The real town of Metropolis is portrayed in one Superman comic-book story, "Superman #92", in a story titled "Massacre in Metropolis!" (which is continued into "Adventures of Superman #515"), as a town whose citizens idolize what is to them the real-life Man of Steel. A villain named Massacre arrives in the town, having gotten lost and thinking he was in the "other" Metropolis, the large city where Superman actually lives. He attacks a security