A test pilot with fuel enough for 10 minutes vanishes for 10 hours - and returns with a fantastic tale of alien contact. This premiere episode of Dimension X originally aired on April 8, 1950.Featuring "adventures in time and space told in future tense", Dimension X aired over NBC from April 8, 1950, through September 29, 1951. The series adapted stories by the modern masters of science fiction, including Isaac Asimov, Ray Bradbury, Robert Heinlein, Clifford Simak, Theodore Sturgeon, and many others.