Come now, dear reader, and let us embark upon a most extraordinary adventure to the farthest reaches of imagination, where civilizations rise and fall across millennia, and stories grow so vast that a single volume could never contain them. If you have ever wished for a tale that refuses to end, that beckons you back evening after evening for weeks on end or perhaps far longer, then you have found your guide.
Here we present fifteen of the most magnificent epic science fiction series ever committed to page—odysseys spanning thousands of pages, countless planets, and generations of characters who shall become as dear to you as family.
Dune by Frank Herbert
The desert planet of Arrakis awaits, where spice is more precious than gold and prophecy moves through the sands like something alive. Frank Herbert crafted this saga beginning in 1965, and it remains the best-selling science fiction novel of all time. The original six books follow House Atreides through schemes of politics, religion, and ecology so intricate they would make even the cleverest fairy quite dizzy.
Young Paul Atreides must navigate betrayal and transformation amid the fierce Fremen people, and what begins as one boy’s journey becomes an exploration of humanity’s relationship with power itself. Herbert believed that heroes, however magnificent, carry catastrophic potential—a theme that resonates through every chapter like drums across the dunes.
Foundation by Isaac Asimov
In 1965, this series accomplished something rather impossible—it defeated Tolkien’s The Lord of the Rings for the Hugo Award for Best All-Time Series. Asimov imagined a mathematician named Hari Seldon who could predict the behaviour of civilisations using something called psychohistory, much as one might predict where a cloud of gas shall drift whilst never knowing the path of any single molecule within it.
A galactic empire is falling, and Seldon establishes a Foundation to preserve human knowledge through the coming dark ages. The Foundation Trilogy, and the later books that expanded it to seven volumes, remain among the most intellectually entertaining adventures ever written—a cerebral feast that has inspired countless scientists and visionaries.
The Expanse by James S.A. Corey
With nine novels and numerous novellas, this modern masterpiece redefined what space opera could accomplish. James S.A. Corey—actually two authors writing as one—gave us a future where humanity has colonised the solar system, and the crew of the gunship Rocinante must navigate wars between Earth, Mars, and the outer planets whilst confronting an alien mystery that threatens everything.
The series won the Hugo Award for Best Series in 2020, and with good reason. These books pulse with action and politics, yet never forget the human hearts at their centre. Captain James Holden and his crew will feel like dear companions by journey’s end.
Hyperion Cantos by Dan Simmons
Once upon a time, Dan Simmons told his students an extended tale, and from that seed grew one of science fiction’s most beloved series. Hyperion uses the structure of Chaucer’s Canterbury Tales—seven pilgrims journeying to mysterious Time Tombs, each sharing their story—whilst drawing deeply from the poetry of John Keats.
The mysterious Shrike awaits, a creature of terror and wonder that haunts these pages. The four books span centuries and earned multiple Hugo and Locus awards. Readers report that the story occupies their thoughts for weeks after finishing, returning again and again like dreams one cannot quite forget.
The Culture Series by Iain M. Banks
Ten novels of what one might call benevolent socialism among the stars—a post-scarcity civilisation where humans and magnificently intelligent artificial minds live together across vast orbital habitats. Banks imagined a future transformed by culture rather than technology alone, and each book examines the moral dilemmas this advanced society faces when encountering less developed worlds.
Begin with The Player of Games or Consider Phlebas, and discover why the artist Grimes called Surface Detail the greatest science fiction book ever written. These novels changed modern science fiction utterly.
Red Rising Saga by Pierce Brown
Pierce Brown describes his creation as “high tech Rome meets space Vikings,” and that captures something of its thundering magnificence. Darrow begins as a Red, the lowest caste in a colour-coded society, mining beneath Mars whilst believing his sacrifice serves future generations. When he discovers the truth—that the surface was colonised long ago, that Reds are slaves—he infiltrates the ruling Golds to destroy society from within.
Six books exist now, with the seventh and final volume in progress. The prose is raw and relentless, the action sequences breathless, and the themes of rebellion and what power does to those who seize it grow more profound with each instalment. Six million copies sold speak to its magnificent grip upon readers.
Children of Time by Adrian Tchaikovsky
What if spiders evolved intelligence? Tchaikovsky, who studied zoology, created a series that follows the development of an entire civilisation of Portia labiata on a terraformed world, alongside humans fleeing a dying Earth. The 2016 Arthur C. Clarke Award winner became a trilogy with Children of Ruin and Children of Memory, and a fourth book arrives in 2026.
In 2023, the series won the Hugo Award for Best Series. Tchaikovsky makes spider culture utterly fascinating, exploring what it means to be a person with such subtle philosophy that readers find themselves emotionally attached to these eight-legged protagonists.
The Book of the New Sun by Gene Wolfe
Here is a work that Publishers Weekly called “comparable in importance to the major works of Tolkien and Lewis.” Set a million years hence, when the sun has dimmed and layers of civilisation lie buried beneath every footstep, this tetralogy follows Severian, a torturer exiled for showing mercy.
Wolfe’s baroque prose rewards careful readers with treasures at every turn. The narrator may be unreliable; meanings hide within meanings. Locus subscribers ranked only Tolkien’s Middle-earth novels above Wolfe’s creation. This is science fiction as literature of the highest order.
Vorkosigan Saga by Lois McMaster Bujold
Sixteen novels and multiple shorter works follow Miles Vorkosigan, a physically disabled aristocrat from the militaristic planet Barrayar, through adventures that blend comedy of manners with breathless action. Bujold has won five Hugo Awards for works in this series, including one for Best Series in 2017.
The saga masterfully contrasts Barrayar’s sword-and-starship culture with the egalitarian Beta Colony, whilst Miles solves problems through brilliant improvisation and sheer audacity. Bujold has been called “one of the best writers of SF adventure to come along in years.”
Remembrance of Earth’s Past by Liu Cixin
Beginning during China’s Cultural Revolution and spanning billions of years, this trilogy—known by its first volume The Three-Body Problem—became the first Asian novel to win the Hugo Award for Best Novel. Liu Cixin’s vision of first contact contains the chilling Dark Forest theory: the galaxy teems with civilisations that remain silent because discovery means destruction.
President Obama called it “wildly imaginative.” George R.R. Martin praised it as “a breakthrough book.” The scientific concepts are rigorous, the scope staggering, and the philosophical implications haunt readers long after the final page.
The Final Architecture by Adrian Tchaikovsky
A complete trilogy of magnificent space opera published between 2021 and 2023. Moon-sized Architects destroy inhabited planets, and humanity’s only hope lies with enhanced humans like Idris who can communicate mind-to-mind with these cosmic horrors. When the Architects return after eighty years of peace, the crew of a salvage vessel becomes crucial to survival itself.
Shards of Earth won the BSFA Award for Best Novel, and Publishers Weekly called it “space opera at its best.” For those seeking a complete epic journey with a satisfying conclusion, this trilogy delivers magnificently.
Hainish Cycle by Ursula K. Le Guin
Le Guin herself admitted these works “aren’t a cycle or a saga” in the traditional sense—yet together they create something extraordinary. Set in a future where human colonies seeded by the planet Hain reconnect after aeons of separation, these books include the Hugo and Nebula Award winners The Left Hand of Darkness and The Dispossessed.
Each world explores what it means to be human through radically different societies—hermaphrodites, anarchists, dreamers. Le Guin built worlds with meaning, swift and intellect-sharpening and heart-softening all at once.
Old Man’s War by John Scalzi
What if you joined the military at seventy-five? Scalzi’s series begins with elderly recruits who receive enhanced new bodies and face a galaxy full of hostile alien species. John Perry’s journey from retiree to captain earned a Hugo nomination, and readers voted the first novel the best science fiction of 2000-2010.
Seven books now exist, with The Shattering Peace arriving in 2025. The series draws inspiration from Heinlein whilst remaining warmly humanist and surprisingly funny. Scalzi welcomes readers into his universe with wit and accessibility.
Revelation Space by Alastair Reynolds
Reynolds holds a PhD in astronomy, and it shows. This “hard” space opera eschews faster-than-light travel for grounded, plausible science whilst spanning from 2200 AD to approximately 40,000 AD. Gothic horror mingles with sense of wonder as humans confront the mysterious Inhibitors—machines that destroy any civilisation growing too advanced.
The dark corridors of the vast starship Nostalgia for Infinity haunted readers for years. These novels contain Lovecraftian elements alongside deep timescales and awesome technologies, touching something primal in those who dare explore them.
The Hitchhiker’s Guide to the Galaxy by Douglas Adams
And finally, for those who believe adventures ought to be funny—that laughter belongs among the stars as much as wonder—Douglas Adams created Arthur Dent, the most hapless interstellar traveller ever to clutch a towel. Earth is demolished for a hyperspace bypass, and things only get stranger from there.
Five books in a “trilogy,” beloved by generations, ranked fourth on the BBC’s Big Read poll. Adams’ wit influenced countless writers and readers, from scientists to entrepreneurs. Elon Musk launched a Tesla into space carrying a copy, with “DON’T PANIC” on the display. The universe has never been funnier.
Where to Begin Your Epic Journey
Each of these series offers something unique—intellectual puzzles or heart-pounding action, gothic horror or satirical comedy, evolutionary wonder or galactic politics. Some span decades of reading; others can be devoured in glorious weeks of immersion.
The beauty of epic science fiction lies in its refusal to end too quickly—like the best adventures, these stories stretch before you with the promise of countless discoveries yet to come. So choose your vessel, dear reader, and set sail for distant stars. The universe awaits, and it is vaster and stranger and more magnificent than you have ever dared to dream.
