X Minus One is an American half-hour science fiction radio drama series that was broadcast from April 24, 1955, to January 9, 1958, in various timeslots on NBC. Known for high production values in adapting stories from the leading American authors of the era, X Minus One has been described as one of the finest offerings of American radio drama and one of the best science fiction series in any medium.
Overview
X Minus One was originally a revival of NBC's Dimension X (1950–51), with the first 15 episodes of X Minus One being new performances of scripts from the older series. Starting with episode 16, the series featured newly-produced episodes by NBC staff writers, mainly Ernest Kinoy and George Lefferts.
The program opened with announcer Fred Collins delivering the countdown, leading into the following introduction (although later shows beginning with Episode 37, were partnered with Galaxy Science Fiction rather than Astounding Science Fiction):