Past Kindle Book Deals but Still Must Read Books!
Looking for must read books you missed the first time around? You’re in the right place. This is where all of our past Kindle book deals live—the ones good enough to click, even if the discount’s gone. Every book here was hand-picked by our team, featured in a daily deal, and still earns a spot on your TBR.
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These Books Earned Our Seal of Approval—Snag Them Before They Vanish (Again)
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169 past books matching Space Exploration
In Darkness Falling, Lord Commander Grayson St.
Darkness Falling
Sci-Fi · First Contact · Space Exploration · Space Opera
Our take
In Darkness Falling, Lord Commander Grayson St. Clair must lead a desperate mission across an alien galaxy after being hurled four billion years into the future. Facing a devourer of civilizations, his ship—and humanity’s hope—hang in the balance. Ian Douglas delivers gripping military sci-fi with high-stakes action, existential dread, and stellar worldbuilding.
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Four billion years into the future, humanity is no longer in known space—and survival may no longer be possible.
Lord Commander Grayson St. Clair and the crew of the Tellus Ad Astra have been flung into a part of the universe untouched by human history. Their mission to establish a new colony becomes a desperate quest for survival as they encounter a monstrous force that consumes entire civilizations.
With time, space, and morale unraveling, St. Clair must lead a civilian mission under military command, navigate ancient alien threats, and somehow find a path back to the Milky Way.
Darkness Falling continues Ian Douglas’s gripping Andromedan Dark series with epic stakes, cutting-edge science, and a pulse-pounding battle between humanity’s future and a cosmic force of annihilation.
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With 4.7 stars on Amazon, this Ocean’s Eleven-meets-John Scalzi adventure is perfect for fans of rogue charmers, shady tactics, and saving the galaxy one hustle at a time.
The Misfit Soldier
Sci-Fi · Space Exploration · Space Opera
Our take
From the author of Planetside comes a hilarious, high-octane sci-fi heist where a conman-turned-reluctant soldier assembles a crew of military misfits for one insane, behind-enemy-lines mission. With 4.7 stars on Amazon, this Ocean’s Eleven-meets-John Scalzi adventure is perfect for fans of rogue charmers, shady tactics, and saving the galaxy one hustle at a time.
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Sergeant Gastovsky—Gas to everyone except his superiors—never planned on joining the military. But when a con gone sideways lands him in power armor, he figures he might as well make it work… and maybe work a few side hustles while he’s at it.
Three years into a six-year contract, Gas is the go-to guy for getting things under the table. But when a squadmate is left behind in the chaos of a senseless battle, Gas sees his shot at a real legacy—and a real payday.
Assembling a team of misfit soldiers for a daring, off-the-books rescue-slash-heist, Gas takes aim at corrupt commanders, enemy lines, and the big score that could change everything.
It’s Ocean’s Eleven in space—with bullets, betrayal, and the best kind of bad decisions.
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With 4.6 stars on Amazon, it’s perfect for fans of David Weber and Jack Campbell.
The Void War
Sci-Fi · Space Exploration · Space Opera
Our take
Disgraced and exiled, Commander James Somerville is thrust into a war that could tear the stars apart. The Void War kicks off the epic Empire Rising series—22 books of cunning strategy, massive space battles, and high-stakes galactic politics. With 4.6 stars on Amazon, it’s perfect for fans of David Weber and Jack Campbell.
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About the book
In 2465, humanity has conquered the stars—but not its own hunger for power.
Two centuries after the invention of the shift drive sparked a ruthless scramble for interstellar territory, tensions between Earth’s superpowers are near breaking point.
Into this volatile frontier steps Commander James Somerville, disgraced and exiled to a backwater survey ship. But when the HMS Drake makes a discovery with galaxy-shaking implications, Somerville is thrust back into the fire. With war looming and only a loyal crew at his side, he’ll need every ounce of strategy and resolve to survive—and possibly change the course of history.
The Void War launches a twenty-two-book military sci-fi epic packed with tactical brilliance, sweeping battles, and one man’s rise through a galaxy on the brink.
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The war is over—until it isn’t.
A King’s Ship
Sci-Fi · Space Exploration · Space Opera
Our take
The war is over—until it isn’t. A King’s Ship (4.5 stars on Amazon) follows Captain James Somerville into uncharted space on a manhunt turned interstellar powder keg. With echoes of Honor Harrington and The Expanse, this military sci-fi sequel delivers political intrigue, starship combat, and the cost of command.
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The war is over, but Captain James Somerville’s mission has just begun.
When former Chinese intelligence minister and war criminal Chang vanishes into deep space, Somerville is tasked with tracking him down—alone. Commanding the HMS Endeavour, the Royal Space Navy’s newest exploration cruiser, he ventures to the far edge of known space.
But what begins as a manhunt soon unearths secrets that could shatter humanity’s place in the galaxy. With old enemies lurking and new threats emerging, Somerville must navigate diplomatic firestorms and brutal skirmishes—often outnumbered, always outgunned.
In deep space, honor has a cost.
A King’s Ship is a gripping installment in the Empire Rising series, perfect for fans of Honor Harrington and The Expanse who love high-stakes naval strategy in the stars.
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Giant mech battles meet academic sabotage in Hard Reboot, Django Wexler’s punchy sci-fi novella rated 4.4 stars on Amazon.
Hard Reboot
Sci-Fi · Space Exploration
Our take
Giant mech battles meet academic sabotage in Hard Reboot, Django Wexler’s punchy sci-fi novella rated 4.4 stars on Amazon. When researcher Kas is tricked into betting university funds on a robot death match, her study trip turns into a crash course in con artists, chaos, and combat. Short, sharp, and ridiculously fun.
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About the book
Academia was supposed to be safe. Boring, even. Then Kas got conned into a robot death match.
Sent on a research mission to the ruins of old Earth, junior scholar Kas expected to catalog tech relics—not gamble her university’s funding on a hulking mech in a gladiator arena. But when a charming scammer ropes her into high-stakes battle-bot wagers, Kas is pulled deep into a world of rusted metal, underground politics, and planet-sized egos.
Now she’s got one shot to survive the fight, salvage her reputation, and maybe learn a thing or two about trust along the way.
Giant mechs. Rogue scholars. Academic drama with a steel-plated punch. When did higher education start including hazard pay?
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With 4.6 stars on Amazon, this action-packed saga is perfect for fans of Firefly and The Expanse.
Last Stop
Sci-Fi · Space Exploration · Space Opera
Our take
Django Wexler launches a bold sci-fi series with sky battles, sibling tension, and bug-infested doom. Pilot Zham Sa-Yool and his exiled sister, the infamous Diamond Knife, lead a mercenary crew on a death-defying mission beneath the clouds. With 4.6 stars on Amazon, this action-packed saga is perfect for fans of Firefly and The Expanse.
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About the book
In a sky ruled by mercenaries, pirates, and monsters below the clouds, one pilot flies too fast, drinks too much, and dodges death like it's a sport.
Zham Sa-Yool never planned to follow his sister into exile, but when Quedra—once the Diamond Knife of the military—lost everything to political sabotage, he climbed aboard her battered airship Last Stop and never looked back.
Now Quedra commands a crew of desperate misfits, and Zham leads the tiny but gutsy air wing trying to keep them alive. Their latest job? Venture into the lethal cloud floor known as the Layer and hunt for a vanished expedition that may have uncovered a lost haven for humanity.
It’s a chance at redemption—or a one-way ticket to extinction.
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When thousands of Marines are wiped out before landing, Cadet Eamon Tauk must lead a desperate march across a deadly alien jungle.
Narman’s Pyke
Sci-Fi · Space Exploration · Space Opera
Our take
When thousands of Marines are wiped out before landing, Cadet Eamon Tauk must lead a desperate march across a deadly alien jungle. Narman’s Pyke is a gripping military sci-fi debut packed with bloodthirsty predators, psychological suspense, and slow-burn romance. 4.7 out of 5 stars on Amazon. Fans of The Expanse and Annihilation, this one’s for you.
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Thousands of Marines died before even landing on Kanaris. Eamon Tauk wasn’t one of them. He only wishes he had been.
Trapped behind enemy lines in a merciless alien rainforest, Cadet Tauk must lead the shattered remnants of his unit across hundreds of kilometers of predator-infested jungle toward a colony that vanished without explanation. Narman’s Pyke is their only hope—if it still exists.
Joining him is Jella Duverii, a sharp-tongued xenobiologist who grew up in the lost colony and knows what stalks the jungle... but not how to stop it.
As unrelenting rain erodes their sanity and vicious creatures close in, Tauk realizes his greatest threat isn’t the alien planet—it’s the people he’s trying to save.
And what’s waiting at Narman’s Pyke may not want them to leave alive.
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Before he outwitted the galaxy, he defended his own.
Star Wars: Thrawn Ascendancy
Sci-Fi · Space Exploration · Space Opera
Our take
Before he outwitted the galaxy, he defended his own. Thrawn Ascendancy: Chaos Rising unveils the origin story of Star Wars’ most legendary tactician. With 4.6 stars on Amazon and penned by bestselling author Timothy Zahn, this epic kicks off a gripping trilogy of galactic politics, unknown threats, and tactical brilliance. Click now to enter the Chaos.
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Before he was Grand Admiral, he was Thrawn of the Ascendancy.
In the dangerous Unknown Regions, the Chiss rule with order and precision—until a mysterious, untraceable attack threatens the stability of their society. The Expansionary Defense Fleet turns to one of their most brilliant, unconventional minds: Thrawn.
Born without status but adopted into the prestigious Mitth family, Thrawn is a rising star in Chiss military ranks. Now, with Admiral Ar’alani at his side and the vast reach of the Chaos to explore, Thrawn must uncover a hidden threat that could unravel everything the Ascendancy holds dear.
But nothing in the Chaos is ever simple. And in this game of shadows and secrets, brilliance may not be enough.
Chaos Rising begins Thrawn’s epic origin saga—strategic, cerebral, and utterly Star Wars.
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With its searing vision and emotional weight, this spellbinding novel is a must-read for fans of philosophical, boundary-pushing science fiction.
The Dispossessed
Sci-Fi · Space Exploration · Time Travel
Our take
An anarchist scientist. Two divided worlds. One daring mission to unite them. Ursula K. Le Guin’s The Dispossessed is a sci-fi classic that explores power, freedom, and sacrifice with masterful depth. With its searing vision and emotional weight, this spellbinding novel is a must-read for fans of philosophical, boundary-pushing science fiction. Click now to cross the divide.
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About the book
Shevek is a physicist, a revolutionary, and a man willing to risk everything to bridge worlds divided by distrust and centuries of isolation.
Born on Anarres—a barren moon where anarchist ideals rule—Shevek dares to challenge his society’s stagnant dogma. His journey takes him to Urras, a mother planet of beauty, inequality, and ambition. There, amid opulence and unrest, Shevek seeks not conquest but connection: to share ideas, to dismantle the invisible walls separating civilizations.
But change comes at a price.
In a society eager to use him for their own ends, Shevek must fight to uphold his vision of freedom, unity, and understanding.
Profound, challenging, and achingly human, The Dispossessed is Ursula K. Le Guin at her visionary best—a masterpiece of science fiction and social commentary.
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Good for readers who like space opera, artificial intelligence, empire, betrayal, and revenge.
Ancillary Justice
Sci-Fi · LGBTQIA+ · Hard Sci-Fi · Space Exploration · Space Opera
Our take
Winner of the Hugo, Nebula, and Arthur C. Clarke Awards, Ancillary Justice follows Breq, a warship AI left with one human body, unanswered questions, and a mission for revenge after an act of treachery destroys what she once was, with a 4.3-star rating from more than 20,900 Amazon reviewers. Good for readers who like space opera, artificial intelligence, empire, betrayal, and revenge.
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About the book
Winner of the Hugo, Nebula, and Arthur C. Clarke Awards: This record-breaking novel follows a warship trapped in a human body on a quest for revenge. A must read for fans of Ursula K. Le Guin and James S. A. Corey.
"There are few who write science fiction like Ann Leckie can. There are few who ever could." -- John Scalzi
On a remote, icy planet, the soldier known as Breq is drawing closer to completing her quest.
Once, she was the Justice of Toren -- a colossal starship with an artificial intelligence linking thousands of soldiers in the service of the Radch, the empire that conquered the galaxy.
Now, an act of treachery has ripped it all away, leaving her with one fragile human body, unanswered questions, and a burning desire for vengeance.
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Perfect for fans of Dead Silence and Event Horizon, this sci-fi thriller will have you questioning what lurks in forgotten corridors.
Forgotten
Sci-Fi · Space Exploration
Our take
Life aboard the Pilgrim was simple—until the past clawed its way back. When Sheriff Hayden Duke’s wife vanishes near a sealed hatch, a bloody handprint is the only clue. What he uncovers could doom them all. Perfect for fans of Dead Silence and Event Horizon, this sci-fi thriller will have you questioning what lurks in forgotten corridors. Click now.
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Sheriff Hayden Duke never questioned life aboard the Pilgrim, the generation ship that's carried his people through centuries of deep space. The systems are locked, the mission automated, and the past best left forgotten.
Until a systems failure sends his wife to the far edge of the habitable zone—and she vanishes without a trace. At the scene, Hayden finds only a bloody handprint on a hatch sealed for hundreds of years... until today.
As Hayden digs into the ship’s dark history, he uncovers secrets meant to stay buried—and something still alive behind those ancient doors.
Some truths are too dangerous to remember. Some nightmares never die.
Perfect for fans of Event Horizon, Dead Silence, and The Expanse, this gripping sci-fi thriller will leave you breathless.
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Survival becomes a negotiation when extinction is the alternative.
The Mercy of Gods
Sci-Fi · Space Exploration · Space Opera
Our take
Survival becomes a negotiation when extinction is the alternative. In The Mercy of Gods, humanity is drawn into an ancient interstellar conflict after a conquering empire enslaves the people of Anjiin. Dafyd Alkhor, an unremarkable man amid extraordinary minds, must learn how power truly works among captors and captives alike. The novel delivers a tense space opera shaped by moral compromise, endurance, and the cost of adaptation.
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From the New York Times bestselling author of the Expanse comes a spectacular new space opera that sees humanity fighting for its survival in a war as old as the universe itself.
“Masterful . . . . This is space opera at its best.” – Publishers Weekly (starred review)
"The start of something truly epic."** ― Fonda Lee, author of Jade City
How humanity came to the planet called Anjiin is lost in the fog of history, but that history is about to end.
The Carryx – part empire, part hive – have waged wars of conquest for centuries, destroying or enslaving species across the galaxy. Now, they are facing a great and deathless enemy. The key to their survival may rest with the humans of Anjiin.
Caught up in academic intrigue and affairs of the heart, Dafyd Alkhor is pleased just to be an assistant to a brilliant scientist and his celebrated research team. Then the Carryx ships descend, decimating the human population and taking the best and brightest of Anjiin society away to serve on the Carryx homeworld, and Dafyd is swept along with them.
They are dropped in the middle of a struggle they barely understand, set in a competition against the other captive species with extinction as the price of failure. Only Dafyd and a handful of his companions see past the Darwinian contest to the deeper game that they must play to survive: learning to understand – and manipulate – the Carryx themselves.
With a noble but suicidal human rebellion on one hand and strange and murderous enemies on the other, the team pays a terrible price to become the trusted servants of their new rulers.
Dafyd Alkhor is a simple man swept up in events that are beyond his control and more vast than his imagination. He will become the champion of humanity and its betrayer, the most hated man in history and the guardian of his people.
This is where his story begins.
"Corey is always one of the most engaging voices in the genre." ― Adrian Tchaikovsky, author of Children of Time
"A bang up read. I want more." ― Paolo Bacigalupi, author of The Water Knife
"A powerful, provocative masterpiece that I will be thinking about for a very long time." ― Ryka Aoki, author of Light from Uncommon Stars
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