Trivia / The Last Days of Superman

• Ascended Fanon: Supergirl time-travels to Krypton and she does not lose her powers somehow. How could she get back from her homeworld despite it being under a red sun? The question was answered in the letter column of Superman (1939) #158, two issues later. A reader by the name of E. Nelson Bridwell -who would later become editor of several Superman books- suggested an explanation, and editor Mort Weisinger declared it canon:
  E. Nelson Bridwell: "In Superboy (1949) #81, the Boy of Steel encountered a type of Red Kryptonite which restored his super powers when he had lost them on a Krypton-like planet with a red sun. It is quite plausible to assume that he brought it to Earth and when he grew up to become Superman deposited it in his Fortress of Solitude. Then when Supergirl found it necessary to make her time trip back to Krypton, she prepared for her journey by taking a chunk of the Red K with her, in the friction proof pouch of her cape. Thus, when it was time for her to return, exposure to this variety of Red K gave her the needed super-powers to take off, correct?"
  Mort Weisinger: "Correct! However, this type of Red K can never again work on her..."

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