Best Sci-Fi Books for Fans of The Expanse
If you've devoured all nine books of The Expanse series (or binged the show), you know the feeling: that perfect blend of hard science fiction, political intrigue, and deeply human characters set against the vast backdrop of our solar system. The good news? There are plenty of other books out there that capture similar magic.
Whether you loved the realistic space physics, the complex political maneuvering, or the ragtag crew dynamics, here are the best sci-fi books to read next.
For the Hard Science and Realistic Space Opera
Kim Stanley Robinson
Robinson is a master of hard SF, and 2312 delivers a meticulously researched vision of our solar system three centuries from now. Like The Expanse, it treats space travel with respect for physics while exploring how humanity might actually colonize the planets and moons around us. The political tensions between different factions across the solar system will feel familiar to Expanse fans, though Robinson's pace is more contemplative than Corey's breakneck plotting.
Alastair Reynolds
Reynolds brings the same commitment to scientific plausibility that makes The Expanse so compelling. Revelation Space kicks off a series featuring faster-than-light travel that actually respects relativity (ships get close to light speed, leading to time dilation drama), nanotechnology, and ancient alien mysteries. The gothic, noir atmosphere differs from The Expanse, but fans of the protomolecule mystery will find plenty to love here.
Becky Chambers
While gentler in tone than The Expanse, Chambers' Wayfarer series shares the found-family crew dynamic that makes the Rocinante's crew so beloved. This is character-driven space opera at its finest, following a diverse crew on a tunneling ship creating wormholes. If you loved the interpersonal relationships and quiet moments between Holden, Naomi, Alex, and Amos, you'll appreciate Chambers' warm, thoughtful approach to her ensemble cast.
For Political Intrigue and Solar System Colonization
Kim Stanley Robinson
The first book in Robinson's Mars trilogy is essential reading for anyone who loved the political complexity of The Expanse. It follows the first hundred colonists on Mars and the factional conflicts that arise as they try to build a new society. The attention to the science of terraforming and the deep dive into competing political philosophies creates the same sense of realism that makes The Expanse so immersive.
Ian McDonald
Set on a colonized Moon controlled by five powerful families, McDonald's Luna series reads like The Godfather in space. The cutthroat corporate politics, the hostile environment where a punctured suit means instant death, and the complex web of alliances will all resonate with fans of the Earth-Mars-Belt dynamics. McDonald doesn't shy away from showing how capitalism might evolve in space, much like The Expanse doesn't romanticize its future.
For Military SF with Moral Complexity
John Scalzi
Scalzi's debut novel offers a perfect blend of military action and thoughtful science fiction. While it focuses more on interstellar conflict than The Expanse, it shares the same DNA: complex moral situations, believable military culture, and characters forced to make impossible choices. The tight pacing and sharp dialogue will appeal to fans of James S.A. Corey's writing style.
Joe Haldeman
A classic that influenced The Expanse, Haldeman's novel explores the human cost of interstellar war with time dilation making soldiers strangers to their own civilization. The realistic portrayal of military life and the questioning of whether the war is even worth fighting echoes the moral ambiguity that runs through The Expanse, particularly in the later books.
For Found Family and Space Adventure
D.F. Pieper
A fast-paced space opera that combines the spy-thriller elements of The Expanse with high-stakes interstellar adventure. When disgraced galactic agent Rej Antares is pulled from prison to stop a mysterious alien weapon that threatens three million colonists, he has just three days to solve the mystery. Teaming up with a by-the-book weapons specialist and a clairvoyant antique dealer, Rej races across the galaxy with alien forces in pursuit. The mismatched crew dynamic, ticking-clock tension, and blend of action with mystery will resonate strongly with fans of the Rocinante's adventures.
Arkady Martine
While set in an interstellar empire rather than our solar system, Martine's novel shares The Expanse's gift for political intrigue and cultural conflict. The protagonist, a new ambassador from a small space station, must navigate the deadly politics of a vast empire. The exploration of cultural identity and belonging, along with a mystery at the heart of the plot, makes this essential reading.
Ann Leckie
Leckie's space opera trilogy features one of the most unique protagonists in modern SF: a former warship AI now inhabiting a single human body. The political intrigue, the examination of colonialism and empire, and the found-family dynamics all echo themes from The Expanse. Plus, the mystery element and the slow reveal of what happened to the protagonist will keep you turning pages.
For Proto-Molecule Level Weirdness
Peter Watts
If you loved the alien horror and cosmic dread of the protomolecule storyline, Watts' hard SF thriller will scratch that itch. A crew of modified humans investigates an alien presence at the edge of the solar system, leading to deeply unsettling questions about consciousness and intelligence. It's darker and more philosophical than The Expanse, but shares that sense of humanity confronting something genuinely alien.
Alastair Reynolds
When a mining crew follows a moon of Saturn as it accelerates out of the solar system, they discover something far beyond human understanding. Reynolds combines realistic near-future technology with mind-bending cosmic mystery in a way that will appeal to fans of The Expanse's protomolecule arc. The crew dynamics and impossible choices they face echo the Rocinante's many predicaments.
Honorable Mentions
The Commonwealth Saga by Peter F. Hamilton - Epic space opera with complex politics and phenomenal world-building, though less grounded in hard science than The Expanse.
The Vorkosigan Saga by Lois McMaster Bujold - Character-driven space adventure with brilliant protagonists and intricate political maneuvering.
The Interdependency series by John Scalzi - Collapsing interstellar empire with sharp political intrigue and Scalzi's signature wit.
Why These Books Work for Expanse Fans
What ties these recommendations together is what makes The Expanse special: they treat space as a real place with real physics, they populate their worlds with complex, flawed characters making difficult choices, and they understand that the best science fiction asks hard questions about politics, identity, and what it means to be human.
The Expanse proved that readers are hungry for science fiction that respects their intelligence, that doesn't take shortcuts with the science, and that builds rich, believable futures. Each of these books shares that commitment to quality while bringing its own unique voice and vision.
So pick up any of these titles, strap in, and prepare for launch. The solar system—and beyond—awaits.
What are your favorite books that scratch the Expanse itch? Share your recommendations in the comments below!
