Sci-fi TV shows always have the chance to make key contributions to the larger genre, but some can influence projects in other categories.

From space operas to psychological thrillers, these shows prove TV is the ultimate medium for ambitious sci-fi - even compared to Hollywood's best.

Discover the greatest sci-fi TV universes, ranked from captivating worlds like Dark and Firefly to iconic franchises like Star Trek and Star Wars.

Ah, the mid-2010s—Netflix and other streamers were on the rise, but old-school TV networks were still taking chances on offbeat genre shows.

If you’re looking for the best throwback sci-fi vibe, Syfy’s The Ark is now in season 2, streaming, and a whole lot of fun (in the classic sci-fi TV way).

Discover the most iconic sci-fi TV characters who are universally recognizable, from Star Trek's Spock to Doctor Who's the Doctor.