Exploring Tomorrow was an American old-time radio series which ran on the Mutual Broadcasting System from December 4, 1957, until June 13, 1958. An advertisement described it as "the first science-fiction show of science-fictioneers, by science-fictioneers and for science-fictioneers - real science fiction for a change!"Exploring Tomorrow was narrated by John W. Campbell, editor of Astounding Magazine. Campbell guided the career of many of the great science fiction writers of the era.