The Atom introduced in Showcase #34 (1961) is physicist and university professor Dr. Raymond Palmer, Ph.D. (He was named for real-life science fiction writer Raymond A. Palmer, who was himself quite short.) After stumbling onto a mass of white dwarf star matter that had fallen to Earth, he fashioned a lens which allowed him to shrink down to subatomic size. Originally, his size and molecular density abilities derived from the white dwarf star material of his costume, controlled by mechanisms in his belt, and later by controls in the palms of his gloves. Much later, he gained the innate equivalent powers within his own body. After the events of Identity Crisis, Ray shrank himself to microscopic size and disappeared. Finding him became a major theme of the Countdown year long series and crossover event.