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BBC Radio science fiction drama serial written by Charles Chilton, first broadcast in 1958 as the series Operation Luna, followed by sequels from the same author including two series of Space Force, plus a sequel by Julian Simpson. Our square-jawed heroes confront the dangers of deep space and boldly charge towards another cliffhanger ending, courageously ignoring the mortal danger, and sometimes overlooking the laws of physics. 72 episodes plus 2 episodes of an interview with Charles Chilton.