The original Star Trek series debuted on TV 51 years ago - September 8, 1966. Since then it has spawned several movies and sequel / prequel series'. Tonight, the latest series, Star Trek Discovery will premier at 8/7c on CBS, free. As to the remaining episodes, you will have to pay for them on CBS All Access. Will you want to continue watching and pay for it? Watch tonight's episode and decide for yourself. For you folks in the Eastern and Central time zones, it begins in only a few minutes.