Dimension X | Old Time Radio brings you visionary science fiction from the golden age of radio, with stories of space travel, alien worlds, futuristic technology, strange experiments, and humanity’s uncertain future. Each episode is an Old Time Retro Radio production, presenting the original broadcast with gently cleaned and mastered audio, a newly produced introduction and closing, and custom episode artwork. Dimension X adapted stories by some of science fiction’s most influential writers, including Ray Bradbury, Isaac Asimov, Robert A. Heinlein, and Kurt Vonnegut, combining imaginative ideas with suspense and classic radio drama. Rediscover classic old time radio science fiction, vintage sci-fi, space adventure, speculative fiction, and futuristic radio drama.
Dimension X - "A Pebble in the Sky" (Old Time Radio, 1951)
Dimension X presents “A Pebble in the Sky,” episode 37, originally broadcast on June 17, 1951. This NBC drama adapts Isaac Asimov’s 1950 novel, with Santos Ortega as archaeologist Bel Arvardan and Susan Douglas as Pola.
On a future Earth dismissed by the Galactic Empire as a radioactive, impoverished backwater, Arvardan arrives to investigate his controversial belief that humanity began there. His search brings him into contact with Earth’s tightly controlled society, mounting prejudice between worlds, and warnings of a danger that reaches far beyond the planet. The radio adaptation was written by Ernest Kinoy and directed by Edward King.
Dimension X presents the original broadcast with a newly produced contextual introduction, a short closing announcement, and gently cleaned/mastered audio for a more consistent listening experience.
Chapters:
00:00 Victor Sterling Introduction
00:44 Original Broadcast
25:38 Closing
Support Old Time Retro Radio at https://www.patreon.com/oldtimeretroradio (https://www.patreon.com/oldtimeretroradio)
11 Oct 2026
Dimension X - "Embassy" (Old Time Radio, 1950)
Dimension X presents “Embassy,” episode 9, originally broadcast on June 3, 1950. This NBC science-fiction drama adapts Donald A. Wollheim’s 1942 short story “The Embassy,” published under the name Martin Pearson.
In New York City, private detective Broderick is hired by the eccentric Mr. Grafius, who insists that a Martian embassy is hidden somewhere in the city. Adapted for radio by George Lefferts, the episode blends hard-boiled detective atmosphere with an unsettling extraterrestrial mystery. The cast includes Joseph Julian, Berry Kroeger, Dan Ocko, and Bryna Raeburn.
Dimension X presents the original broadcast with a newly produced contextual introduction, a short closing announcement, and gently cleaned/mastered audio for a more consistent listening experience.
Chapters:
00:00 Victor Sterling Introduction
00:43 Original Broadcast
30:40 Closing
Support Old Time Retro Radio at https://www.patreon.com/oldtimeretroradio (https://www.patreon.com/oldtimeretroradio)
10 Oct 2026
Dimension X - "Vital Factor" (Old Time Radio, 1951)
Dimension X presents “Vital Factor,” episode 44, originally broadcast August 16, 1951. This NBC sustaining-program drama adapts Nelson S. Bond’s short story “The Vital Factor,” with a script by Howard Rodman and direction by Fred Weihe.
Wayne Crowder, the relentless head of Crowder Industries, is determined to make history with the first human spaceflight—but his engineers still cannot conquer the problem of propulsion. When an enigmatic visitor arrives with a possible answer, Crowder’s ambition meets conditions that neither wealth nor industrial power can easily command. The cast includes Raymond Edward Johnson and Luis Van Rooten.
Dimension X presents the original broadcast with a newly produced contextual introduction, a short closing announcement, and gently cleaned/mastered audio for a more consistent listening experience.
Chapters:
00:00 Victor Sterling Introduction
00:53 Original Broadcast
30:45 Closing
Support Old Time Retro Radio at https://www.patreon.com/oldtimeretroradio (https://www.patreon.com/oldtimeretroradio)
Contact Dimension X | Old Time Radio
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