As of June 27th 2007, it was made considered Canon with TPTB with star trek at the time. it was the same writers and same producers for the series as the rest of TOS. In addition there are species, and events that are referenced in other star trek series. Official Star Trek website lists it as Canon. while it is a children's show and not all episodes are to be taken seriously, it is not a reason to limit what you can do with your series.... just saying.