Claim: Star Trek: Discovery is a prequel to the books.
Evidence: Set roughly a decade before the events of the original Star Trek series , separate from the timeline of the concurrent feature films , Discovery explores a previously mentioned event from the history of Star Trek while following the crew of the USS Discovery.
The first television series , simply called Star Trek and now referred to as The Original Series , debuted in 1966 and aired for three seasons on the television network NBC.