From Borg battles to impossible moral choices, these are the 'Star Trek' episodes that define the hit sci-fi franchise.

What hurts more than a nail-biting cliffhanger? A cliffhanger that'll never be resolved. Sadly, that's exactly what happened ...

From Kirk to Picard and beyond, from the dawn of the Federation to the age of Discovery, here's how to watch Star Trek in ...

Although the Romulans in "Star Trek" are closely related to the Vulcans, in J.J. Abrams' version of the story, they have a ...

Even though these characters only appeared in a single episode of a "Star Trek" series, they left an unforgettable mark on the franchise.