If you’re a sci-fi fan and grew up in the ’70s, you probably watched shows that didn’t exist anywhere else. Why? Because it was the era of spaceships, wacky robots, weird aliens, and adventures that fired up your imagination like nothing today can. Back in the day, sci-fi was fresh and full of surprises โ no wonder some productions like Star Wars, Alien, or Doctor Who became huge. But some ended up flying under the radar, even though they left a huge mark on the childhoods of anyone who lived through those decades. They had endless creativity, characters you actually rooted for, and stories that, even when simple, kept you hooked every week.
Videos by ComicBook.com
With that in mind, here are 6 underrated, totally underappreciated sci-fi shows that every ’70s kid remembers. These were series that, even without massive popularity back then or today, proved TV sci-fi could entertain in ways few shows can nowadays.
6) Terrahawks

If you grew up in the ’80s, Terrahawks is probably a name that sticks in your memory for one simple reason: it was bizarre, colorful, and totally different from anything else on TV at the time. The show followed a team protecting Earth from alien invaders, and the characters were way too memorable to forget. Sure, giant puppets, wacky robots, and even the villainess Zelda might seem over-the-top, but somehow it all just worked.
There was action, humor, and this constant feeling that anything could happen at any moment โ and that’s exactly what kids remember. Even though the show never became a massive hit, its chaotic, slightly over-the-top vibe is what made so many people hold onto it as one of the most fun sci-fi experiences of their childhood.
5) The Tripods

The Tripods had a premise that stuck: giant aliens controlling humanity. For kids from the ’70s, it was an adventure that gave you that thrilling chill, but without losing the sense of hope. Three young protagonists trying to escape the “Capping” (a brainwashing process controlled by the Tripods) and joining the resistance made you root for them and imagine what it would be like to face something so massive.
The show really knew how to connect with its audience, mixing suspense with pure action. It wasn’t the kind of sci-fi that relied on huge explosions, but the constant feeling of tension and a world ruled by tripods kept kids on the edge of their seats. That’s why it’s still remembered so fondly today, even if it doesn’t get talked about much.
4) Buck Rogers in the 25th Century

Pure entertainment, especially in the space adventure department, that genuinely hooked kids? That was Buck Rogers in the 25th Century. The story follows the protagonist waking up after centuries in suspended animation and joining the Earth Defense Force to fight interplanetary threats. Watching the show felt like catching a blockbuster movie every week on TV. With funny androids, sleek spaceships, and stylish villains, its charm came from the mix of adventure, humor, and futuristic imagination.
The best part? The show didn’t need over-the-top special effects to keep you hooked โ the cast’s charisma and the robots were enough. This is definitely one of those productions that people feel the most nostalgic about. It was pure sci-fi with action, color, and fun, all in just the right doses.
3) Sapphire & Steel

Sapphire & Steel was strange, mysterious, and a little scary. Totally different from anything else on TV at the time, it sticks in the memory of ’70s kids because it grabbed the attention of anyone curious. There were no space adventures or battles, but the suspenseful atmosphere and time disturbances were enough. The show followed two interdimensional agents who solved temporal anomalies and disturbances that threatened reality.
What really made it memorable was the feeling that something completely inexplicable and unsettling could happen at any moment. Each episode seemed to challenge your mind while bending your sense of reality. Kids remember it because it was weird, but addictive at the same time. Looking back, it was actually ahead of its time.
2) UFO

Remembered by a lot of sci-fi fans but not really celebrated today, UFO had a look nobody could forget: lunar bases, futuristic fighter jets, and mysterious aliens. The premise followed SHADO, an organization protecting Earth from alien invaders with secret technology and high-level strategies. It was canceled shortly after debuting in 1970, so it barely had time to develop, but for kids who discovered it later, seeing such advanced technology while still relating to human heroes was impressive.
The show’s serious tone and nonstop high-stakes missions made it memorable, even in its short run. Each episode delivered exactly what was fun about the genre: tension, futuristic visuals, and characters that were really compelling. Kids remember it because it was “real” sci-fi, with actual danger and excitement, without needing to be overly fantastical.
1) Battlestar Galactica

If there were an award for “sci-fi show that sticks in every kid’s memory,” Battlestar Galactica would win hands down. Spaceships, Cylons hunting humans, the Galactica leading the last surviving fleet โ all of it fired up the imagination. It was epic, intense, and easy to get into, even for kids who didn’t fully grasp the complex concepts of the genre. For a lot of people, it’s not really underrated, but if you compare it to the 2004 remake, you could say it is.
Every episode had everything a kid could want: action, drama, and incredibly interesting characters, making it a complete experience. You could easily feel like you were part of the story, cheering for the humans along the way. It’s no surprise it’s still celebrated as one of the best sci-fi shows, even if it’s become a bit overlooked over time (especially compared to Star Wars, since it lived in its shadow).
Remember these shows? Which one’s your favorite? Was there another ’70s sci-fi series that stuck with you? Let us know in the comments!

			






