When it premiered on NBC in September 1966, Star Trek was described by its creator, Gene Roddenberry, as “Wagon Train to the stars.” Featuring a racially diverse cast, trips to exotic planets, and encounters with an array of alien beings who could be either friendly or hostile, the program opened up new vistas for television. Along with The Twilight Zone and The Outer Limits, Star Trek represented one of the small screen’s rare ventures into science fiction during the 1960s. Although the original series was a modest success during its three-year run, its afterlife has been nothing less than a cultural phenomenon. To celebrate the show’s debut fifty years later, it’s time to reexamine one of the most influential programs in history.