X Minus One was a superior science fiction series, an extension of Dimension X, broadcast from 1955 to 1958. It was later revived on NBC in 1973 for two years. The first 15 broadcasts were repeats from Dimension X before new adaptions were produced. Most stories from X Minus One were adapted from Galaxy, Universe, and Astounding, three leading S-F magazines in the 50s. Many radio performers were part of the cast, such as Mason Adams, Joan Alexander, Jack Grimes, Joseph Julian and Ted Osborne, etc. X Minus One's appearance marked a milestone for the radio in 1955, as it advanced the place of the S-F genre on the air.
