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
Z'ha'dum (fictional planet) Z'ha'dum (fictional planet) In the fictional "Babylon 5" universe, Z'ha'dum is the homeworld of an ancient, mysterious race known as the Shadows. The planet is near the galactic rim. The Shadows return to the world every time they are defeated, until their final departure from the galaxy in 2261. The name "Z'ha'dum" was inspired by J. R. R. Tolkien's "Khazad-dûm", the dwarvish name for Moria in Middle-earth. Z'ha'dum has extensive mountain ranges composed of igneous rock and lava fields from volcanoes of glittering obsidian that tower over sediment-covered plains. Weather patterns are violent, with dust storms covering one-quarter of the