It would be understandable to describe “Space Seed” as a prequel to Star Trek II: The Wrath of Khan, given the way that film ...

While the original "Star Trek" series as a whole is hallowed ground for sci-fi aficionados, there's one episode in particular that stands out from the rest: "The City on the Edge of Forever." ...

Similarly, in Star Trek: The Animated Series, the Guardian of Forever is used to correct a mistake that erased Spock from history. In "City on the Edge of Forever," proximity to the Guardian ...

who turns out to be the classic time-travel machine known as the Guardian of Forever from the original Star Trek episode “The City on the Edge of Forever.” For viewers, this may seem like the ...