<P> Star Trek : Discovery premiered on September 19 , 2017 , at ArcLight Hollywood , before debuting on CBS and CBS All Access on September 24 . The rest of the 15 - episode first season was streamed weekly on All Access . The series ' release led to record subscriptions for All Access , and positive reviews from critics who highlighted Martin - Green 's performance . A second season was ordered in October 2017 . </P>
when does star trek discovery air on tv
September 19 , 2017