Sidéral #20
In "La menace du miroir de Mars !", scientist Daryl Halbert races against time after a mysterious signal calls him home—only to be rescued by alien emissaries who warn that Earth’s declining albedo could turn the planet into an invisible threat. With just seven hours to find a solution, Halbert uncovers a startling truth: a layer of glassy space dust is slowly obscuring Earth, and only a daring experiment can prove it can be cleared. Written by Otto Binder and illustrated by John Giunta, with a striking cover by Gil Kane, this 1959 issue blends cosmic dread with a race to save the planet before it vanishes from the solar system.
In "La Terre, monde condamné !..", scientist Daryl Halbert races back to Earth after detecting a dangerous drop in the planet’s albedo, only to crash-land and be rescued by enigmatic aliens. They reveal Earth is on a path to becoming an invisible cosmic threat—and Halbert has just seven hours to find a way to save it. With the help of a mysterious glassy space dust covering the planet, he devises a desperate test that may offer a way to preserve not just Earth, but other worlds to come.
In "L'énigme de l'astéroïde 8794," Bruce Carlton unravels a mystery when a radio broadcast gone wrong leads him to an asteroid linked to a cryptic record number. Trapped in a crater, Clark Hale reveals he was left a fortune by the reclusive Cyrus Crane—only for Orion Batson to intercept the secret. With time running out, Carlton and Hale race to claim the treasure before Batson does.
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↩ Reprints Tales of the Unexpected #27 (1958), Mystery in Space #50 (1959), Mystery in Space #52 (1959)
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