Star Trek is all about exploring new worlds. This leads to the discovery of some of the best alien races sci-fi has ever created.

Each alien race has an intricate history. Members may serve on the crew—or seek to destroy it. These intergalactic relationships deepen every episode of Star Trek from The Original Series to the new Star Trek: Picard.

Do you think you’re an expert at Star Trek mythology? Take the trivia quiz below to see how many of these alien races can you identify.

And don’t forget you can stream every episode and meet every life form from The Original Series, The Next Generation, Deep Space Nine, Voyager, Enterprise, Discovery, and Picard using CBS All Access.