The 10 Greatest Sci-Fi TV Series of All Time

    Celebrate some of the best sci-fi the small screen has to offer.

    We’ve had science fiction since back in the days when the idea of a TV would’ve been science fiction, but the two were always destined to go perfectly together. There’s a unique delight in science fiction novels and, for that matter, in science fiction movies and radio serials. But TV is arguably where sci-fi shines the most. It’s where the genre has the visuals to show us a fictional universe and the time–across episodes and seasons–to show us many such universes or every aspect of one. In this post, I’ll be celebrating the greatest sci-fi TV shows of all time the best way I know how: by ranking them, so that you can yell at me on Twitter. Enjoy.

    10. Black Mirror

    sci-fi TV series
    Photo Credit: Netflix

    The Golden Age of TV has offered plenty of sci-fi TV series, which is great: the high production quality that has marked the shows of this era looks beautiful when applied to sci-fi in series like Westworld. Of course, science fiction has a long history of iconic shows and cult classics, so balancing the fancy newcomers against the shoestring-budget oldies is a tough thing to do. The classics largely win out in the list that follows (albeit with one notable exception and a few ordering choices that are sure to earn me some ALL-CAPS EMAILS), but Black Mirror gets the nod here in part because it feels like it’s in conversation with that past as it mixes The Twilight Zone’s eerie anthology vibe with a very modern feeling of tech-induced paranoia.

    RELATED: 10 Books Like Black Mirror 

    9. Doctor Who

    sci-fi TV series
    Photo Credit: BBC

    Doctor Who is, of course, a classic: the good Doctor and their time-traveling police box-spaceship have made it through over 800 episodes, and the show is the longest-running sci-fi TV series of all time (albeit not consecutively). Doctor Who can be strange, charming, and silly, but it also knows how to pull off an action sequence or tug on the heartstrings. 

    RELATED: The 13th Doctor Can Teach Us a Lot About Being Human 

    8. The X-Files

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    Photo Credit: Fox

    The X-Files managed to make the jump from cult hit to pop culture classic. It rose from humble beginnings but became bankable enough to spawn movies and, recently, a return to the small screen. It’s a fascinating sci-fi TV series to re-watch now in part because it still seems to have a divided soul. The X-Files features standalone episodes that are underpinned by a long-running series plot. Its special effects seem cheesy at times and excellent at others. It invented its own tropes and then indulged them. It’s a major-network hit and a cult classic at once, but its indispensable either way.

    RELATED: This Airman Claims He Met Aliens from the Roswell UFO Incident 

    7. Star Trek: The Next Generation  

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    Photo Credit: CBS

    As Wayne Campbell once said, Star Trek: The Next Generation is “in many ways … superior, but will never be as recognized as the original.” Well said, Wayne. Star Trek’s best spin-off series features better special effects, more thoughtful plots, and superior acting. It’s not as revolutionary as its older counterpart, but it is arguably more fun to watch, and it still ranks among the most iconic sci-fi TV series of all time. It deserves a spot on this list.

    6. Futurama

    sci-fi TV series
    Photo Credit: Fox

    Futurama wasn’t necessarily revolutionary, but it did everything well. It poked fun at familiar tropes while feeling fairly familiar itself. It was a hi-fi Simpsons with a loveable sitcom cast. It was funny, but not paralyzingly so, and emotional, but not disturbingly so. It was, simply, a really good show: the kind of show you can watch almost anywhere and at almost any time and just enjoy. You can’t swing a stick without hitting someone who doesn’t like Rick and Morty, but you will have a hard time finding anyone who doesn’t tolerate Futurama; though, if you did, you probably would want to hit them with that stick.

    5. Stranger Things

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    Photo Credit: Netflix

    There’s a parallel universe somewhere where Stranger Things went as unheeded as everyone expected it to, where it’s a cult classic and where Firefly-style super-fans beg for it to come back. But our universe has the internet, Netflix, and the Golden Age of Television, and Stranger Things became a word-of-mouth hit and then a viral phenomenon. Stranger Things’ second season had strong moments and interesting themes, but it’s the improbably perfect first season that lands the show on our list of the greatest sci-fi TV series of all time. Stranger Things arrived fully formed, feeling nostalgic and new at the same time. To watch the first season for the first time is to feel at times like you’re re-watching an old favorite and, at other times, like you’ve never seen anything like this before.

    RELATED: Stranger Things 2 Turned Its View of Authority Upside Down 

    4. Battlestar Galactica

    sci-fi TV series
    Photo Credit: Syfy

    We’re talking the 2004 revival here, which is really the gold standard for sci-fi TV series reboots. Battlestar Galactica’s story follows human refugees on the run from the Cylons, who–in the reboot’s much-improved imagining–are machines that can look nearly perfectly human. Also, this is the show that used “frak” as a profanity.

    RELATED: How Battlestar Galactica Brought Me Back to Earth 

    3. The Twilight Zone

    sci-fi TV series
    Photo Credit: CBS

    Before Black Mirror there was The Twilight Zone, the anthology sci-fi TV series that subverted expectations and delighted in twist endings and startling reveals. Nearly 70 years after its debut, The Twilight Zone feels more like an icon than a relic: it defined its genre so totally that choices that should be dated instead feel entirely appropriate.

    2. Firefly

    sci-fi TV series
    Photo Credit: CBS

    Firefly is the perfect cult-hit sci-fi TV series. Its premature cancellation left it frozen in time, and it works as much because of that as despite it. Firefly is flawed in all kinds of ways, but like the best cult shows, those flaws somehow feel structural, as if the whole thing would fall apart without them. I’m not saying that Firefly couldn’t have kept this tightrope act up for another season or 10, or that it couldn’t have become the all-time greatest sci-fi TV series that its fans believe would have been. But I am saying that its first season is a fascinating one to have frozen in amber, and that Firefly is the best TV cult classic in a genre full of them. That’s no mean feat.

    1. Star Trek

    sci-fi TV series
    Photo Credit: CBS

    No single show had a greater impact on the future of sci-fi television–and science fiction in general–than Star Trek. Gene Roddenberry was inspired to create his 1960s space adventure series in part by the Horatio Hornblower series of maritime novels, which makes a lot more sense when you remember that he couldn’t have drawn inspiration from the show he was about to invent, which is what just about everyone else has done since.

    Star Trek really does feel like the prototype for almost every sci-fi TV series that came after it. It’s every kind of sci-fi franchise at once. It’s a pop culture touchstone, but one with cultish die-hard fans; it’s an underappreciated gem cancelled just three seasons in, but also the starting point of a multimedia empire of movies, novels, toys, and spin-offs. More than 50 years after it first aired, Star Trek would be required viewing even if it wasn’t still a ton of fun to watch. But it is.

    RELATED: 7 Huge Hazards of Living in the Star Trek Universe 

    Featured still from "The Twilight Zone" via CBS

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