What is kryptonite?
Kryptonite is a fictional element from the Superman comic book series (and subsequent related media). The element, usually shown as having been created from the remains of Superman’s native planet of Krypton, generally has detrimental effects on Superman. The name “kryptonite” covers a variety of forms of the element, but usually refers to the most common “green” form. Kryptonite was produced from the material of Krypton, when it was destroyed in an explosion. It is usually found in the form of a glowing green rock or metal, but crystalline forms have also made appearances along with different-colored variants, such as the red form.
