8 Hard Sci-Fi Shows Better Than Battlestar Galactica

Published Sep 2, 2026, 3:30 PM EDT Tom is a Senior Staff Writer at Screen Rant, with expertise covering everything from hilarious sitcoms to jaw-dropping sci-fi epics. Initially he was an Updates writer, though before long he found his way to the TV and movies team. He now spends his days keeping Screen Rant readers informed about the TV shows of yesteryear, whether it's recommending hidden gems that may have been missed by genre fans or deep diving into ways your favorite shows have (or haven't) stood the test of time. Tom is based in the UK and when he's not writing about TV shows, he's watching them. He's also an avid horror fiction writer, gamer, and has a Dungeons and Dragons habit that he tries (and fails) to keep in check. Sign in to your ScreenRant account Battlestar Galactica has been a go-to show for hard sci-fi fans ever since it started its phenomenal 2004 run. Ronald D. Moore's reimagining of the classic 1970s show transformed it into a politically character-driven epic that treated space travel, military conflict, and humanity's survival with remarkable seriousness, establishing a new standard for hard sci-fi on TV. Still, while it will always be of the greats, Battlestar Galactica isn’t the best hard sci-fi show out there. Plenty of others lean even harder into grounded scientific accuracy, depth, and realism, and deliver stories that are just as gripping along the way. Some take place in the depths of space, others chronicle the rise and fall of entire civilizations, but all of them deliver a harder kind of sci-fi than Battlestar Galactica. Odyssey 5 (2002) Few science fiction shows begin with a premise as immediately intriguing as Odyssey 5. The 2002 Showtime series followed five astronauts who witness the destruction of Earth while observing the planet from orbit. Chuck Taggart (Peter Weller) and his fellow survivors are then sent back five years in time by an artificial intelligence, giving them one opportunity to discover what caused humanity's extinction and prevent it. While time travel is rarely synonymous with scientific realism, Odyssey 5 approaches its extraordinary premise with meticulous attention to detail. Odyssey 5 focuses heavily on causality and the consequences of changing history, with emphasis on the complexity of the technology Taggart’s team rely on too. Battlestar Galactica is ultimately a space opera with hard sci-fi elements, whereas Odyssey 5 is more interested in systematically exploring its central scientific concept. Its cancellation after one season remains frustrating, but its ambition makes it an essential recommendation for fans seeking a more intellectually rigorous kind of hard sci-fi. Defying Gravity (2009) Another hard sci-fi show that was canceled far too early just like Odyssey 5, 2009’s Defying Gravity initially presents itself as a conventional ensemble drama, but its commitment to the practical realities of a long-duration space mission quickly reveals that it’s hard sci-fi to its core. The plot revolves around an international group of astronauts traveling through the solar system aboard the Antares. The crew must contend with isolation, mission pressures, and the physical difficulties of living far from Earth. The ABC series combines interpersonal drama with an unusually grounded vision of space exploration. Defying Gravity’s general atmosphere and attention to the psychological consequences of prolonged space travel create a stronger sense of realism than Battlestar Galactica. While Defying Gravity also eventually introduces a more mysterious and speculative element, its foundation remains rooted in recognizable human spaceflight. Its sci-fi world feels consistently close to reality, even when its story becomes increasingly strange. For All Mankind (2019-Present) Hard sci-fi is definitely having a renaissance on the small screen, and one of the still ongoing series that proves it is Apple TV's For All Mankind. Built around an alternate-history divergence rather than a distant fictional universe, For All Mankind explores what would happen if the Soviet Union reached the Moon before the United States. The USSR winning the space-race sets off a chain of events that see humanity’s expansion beyond Earth accelerate dramatically. When it comes to hard sci-fi, For All Mankind’s greatest strength is its rigorous dive into the consequences of technological progress. It takes the engineering, politics, economics, and human risks of space exploration seriously, showing how one breakthrough creates new possibilities while introducing entirely new problems. The show may take increasing speculative liberties as its timeline advances, but its vision of how humanity might actually establish a lasting presence in space still feels grounded. Battlestar Galactica delivers a more focused survival story, yet For All Mankind offers a far more detailed and scientifically focused vision of humanity's future beyond Earth. 3 Body Problem (2024-Present) With only one season released so far, Netflix's 3 Body Problem is still in its infancy, but it’s already being regarded as one of the best hard sci-fi shows out there. The series takes theoretical physics and expands into one of the most ambitious stories the genre’s ever seen. Based on Liu Cixin's celebrated novels, 3 Body Problem follows various scientists confronting evidence that humanity has made contact with an alien civilization. The wide ensemble of characters get drawn into a crisis involving impossible scientific phenomena, advanced technology, and the terrifying prospect of an extraterrestrial invasion. The science in 3 Body Problem is not always realistic in the conventional sense (it does deal with encounters with alien civilizations, after all). However, it takes its scientific ideas exceptionally seriously. Physics, mathematics, cosmology, and the limits of human knowledge are fundamental to the plot. Essentially, it’s a grounded examination of what would happen if humanity encountered technology and intelligence operating according to principles we barely understand. It’s less intimate and character-driven than Battlestar Galactica, but 3 Body Problem is the more scientifically ambitious series, using enormous theoretical concepts to construct a genuinely unsettling vision of humanity's place in the universe. Foundation (2021-Present) At first glance, Foundation may seem more like a sweeping space opera than a hard sci-fi show. Then again, so did Battlestar Galactica. The key difference is that Foundation leans even harder into the science behind its spectacle. Apple TV's adaptation of Isaac Asimov's work takes place across a vast Galactic Empire and includes technology far beyond anything recognizable today. Yet the show's central concept is built around one of science fiction's most influential attempts to apply scientific thinking to human civilization: Hari Seldon's (Jared Harris) psychohistory. As far as concepts go, the idea that mathematics could predict large-scale historical trends is about as hard sci-fi as it gets. Foundation’s enormous story examines population behavior, technological development, and the collapse of civilizations across centuries. The show’s eagerness to hinge its narrative on systems of probability makes it intellectually committed to scientific ideas at levels Battlestar Galactica rarely attempts. It’s far from light viewing, but any hard sci-fi fan who enjoys shows that don’t hold their hand is bound to fall in love with Foundation. Planetes (2003-2004) Hard sci-fi isn’t just limited to live-action, as Planetes proves. What’s more, the hugely underrated anime from 2003 demonstrates that some of the best hard sci-fi stories can emerge from the least glamorous parts of space exploration. The series takes place in a near-future world where humanity has expanded into orbit, creating a serious new problem: dangerous space debris. Central character Hachimaki works as part of a debris collection team, removing hazardous objects that threaten spacecraft and human lives. This completely mundane interstellar premise allows Planetes to explore space from a perspective television rarely considers. Orbital mechanics, vacuum exposure, debris impacts, and the economics of space development all play important roles. It’s a hard sci-fi vision that feels substantially close to a plausible future, even compared to Battlestar Galactica’s imagining of how humanity would operate at an interstellar level. Its attention to the mundane realities of working in space makes Planetes as convincing as it is cerebral, while its emotional and philosophical storytelling ensures every episode counts. Devs (2020) Alex Garland's Devs takes a very different route to hard sci-fi. Rather than the depths of space, the 2020 Hulu miniseries takes place largely set on Earth. The story revolves around the secretive technology company Amaya, where computer engineer Lily Chan (Sonoya Mizuno) finds herself having to investigate the disappearance of her boyfriend. Her search eventually leads to a mysterious quantum computing project whose implications challenge fundamental ideas about causality, free will, and reality itself. Instead of the future of space travel, Devs builds its hard sci-fi atmosphere around theoretical physics and determinism. It’s deliberately complex, and inseparably blends scientific concepts with philosophical questions. Battlestar Galactica eventually explores destiny and prophecy, but Devs examines similar questions through a more explicitly scientific framework centered around quantum mechanics. It may be a very different kind of story, but the complex scientific and philosophical ideas give the sci-fi of Devs a harder edge than Battlestar Galactica. The Expanse (2015-2022) No modern sci-fi TV show combines realism and large-scale storytelling as successfully as The Expanse. Beginning on Syfy before moving to Prime Video, the 6-season series is set in a future where humanity has colonized the solar system but remains politically divided. The show’s understanding of how space actually works is mindblowing. Spacecraft behave more like machines operating in a vacuum than the naval vessels seen throughout traditional space opera, and living in different environments fundamentally changes human societies and even physiology. Even the more speculative elements, such as the mysterious Protomolecule, are explored through a scientifically grounded world. Battlestar Galactica remains one of television's greatest sci-fi dramas, but The Expanse is simply the stronger hard sci-fi series. It delivers comparable political complexity, memorable characters, and existential stakes while taking the scientific foundations of its universe considerably more seriously. Its scale also expands without abandoning the rules established by its setting. For Battlestar Galactica fans searching for the natural next step, The Expanse is the obvious choice. Release Date 2004 - 2009-00-00 Network SyFy Showrunner Ronald D. Moore Cast Edward James Olmos William Adama Mary McDonnell Laura Roslin Directors Wayne Rose, Michael Nankin, Rod Hardy, Sergio Mimica-Gezzan, Edward James Olmos, Robert M. Young, Jeff Woolnough, Félix Enríquez Alcalá, Jonas Pate, Allan Kroeker, Anthony Hemingway, Jean de Segonzac, Marita Grabiak, James Head, Paul A. Edwards, Gwyneth Horder-Payton, Brad Turner, Ronald D. Moore, Bill Eagles Writers Carla Robinson, Michael Taylor, Bradley Thompson, David Weddle, Jane Espenson, Mark Verheiden, Michael Angeli, Anne Cofell Saunders, Jeff Vlaming, Michael Rymer, Dawn Prestwich, Nicole Yorkin, Seamus Kevin Fahey Franchise(s) Battlestar Galactica Creator(s) Glen A. Larson, Ronald D. Moore