Before it reached television, science fiction existed on the printed page, in comic books, and on movie screens for decades. Adapting science fiction to the new medium posed substantial challenges: Small viewing screens and limited production facilities made it difficult to achieve the sense of wonder that had become the genre's hallmark. Yet, television also offered unprecedented opportunities. Its serial nature allowed for longer, more complex stories, as well as developing characters and building suspense over time. Producers of science fiction television programming learned to create...