Hardsci-fi Stories

Neo-Cincy is a city built on surveillance, debt, and secrets. In Sector 9, every citizen is assigned a Personal Identity Number at birth. Most people use theirs for medical records, transit access, employment, etc. D4X's? 082819 became a ghost code. Once registered as a retrieval operative (E-level), D4X worked for one of Sector 9's largest private intelligence contractors, tracking stolen prototypes, rogue hackers, and political dissidents. Then a contract went sideways. His target wasn't a criminal. It was a whistleblower carrying proof that Neo-Cincy's governing corporations had been erasing citizens-digitally first, physically second. D4X made a choice... He killed the retrieval team. Took the data. Burned his identity. Now his PIN exists in the system as both active and deceased-a bureaucratic impossibility that makes him a phantom in the network. These days he works as a Data Runner moving stolen intel between resistance cells, black market brokers, and anyone rich enough to pay. But bounty hunting pays better. So if someone puts a price on a monster, a traitor, or a corporate butcher? D4X collects.

The Empress of Rhea entered the wormhole. She didn't come out where she was supposed to. Now she's stranded between the stars - half a light-year from the nearest inhabited system, with a crew of seven, a dead drive, and no way home. In the history of interstellar flight, nothing like this has ever happened. There is no protocol. No rescue coming. No plan. Jack Conrad is a General Systems Flight Engineer. Not a hero. Not a leader. Just the one person aboard who understands the whole picture - and the only one who refuses to stop looking for the exit. His idea, when it comes, is the most audacious thing anyone has ever attempted in the history of human spaceflight. It probably won't work. But the alternative is worse. The crew think he's lost his mind. The physics say otherwise. But physics and survival are two different problems, and the gap between them is filled with dwindling resources, failing hardware, a fractious crew, and the kind of bad luck that only reveals itself when you're already too far from help to matter. The Empress of Rhea is hard science fiction at its most unsparing - a story of ingenuity, endurance, and one man's stubborn refusal to accept that the ledger can't be squared. Some voyages make history. This one nearly didn't make it at all.

.. | ASTEROID_16_PSYCHE --/--/2234 Amanda Hawthorne is a decorated officer in Earth's navy, and thought she'd seen it all, but that couldn't be further from the truth. When a fatal mistake brings tragedy to her doorstep, Amanda embarks on a vendetta with an ally she never expected, willing to burn every bridge before and behind her. But as she starts a new life on the extrasolar colonies, faces from her past return, some for the better and worse. And as an unravelling conspiracy brings them together, they need each other's help to secure a peaceful future for all of humanity. OUTLIERS is a hard science fiction space opera in a dark and gritty setting, with a realistic view on what the future of space travel could look like. It's a story of adventure, love, politics, past grief and family, and perfect read for people who wish to escape the more common tropes of sci-fi.

HALOCLINE: The Brackish Layer What if reality isn't broken... but desynchronized? After the mysterious disappearance of his father, Tide is left with nothing but unanswered questions and an old aquarium that should never exist. Inside, two layers of water remain perfectly separated-an impossible phenomenon known as a halocline. As Tide searches for the truth, he uncovers forgotten research, abandoned facilities hidden beneath the coast, and strange phenomena that defy every law of science. Then he meets Arnon, a young man haunted by fragmented memories that don't seem to belong to him. Together, they begin to uncover a secret buried beneath the ocean for decades. A secret capable of bending memory. Refracting truth. And reshaping reality itself. HALOCLINE: The Brackish Layer is the first novel in the HALOCLINE Trilogy, a science-fiction mystery that blends real marine science with psychological suspense and cosmic mystery, asking one unforgettable question: If truth depends on the medium through which it travels... can anyone ever know what is real?

The 2234 Universe gathers wild, thought‑provoking stories from every corner of a hard‑won Solar System. In the asteroid belt people struggle and strive. On Ariel's ice, a battered outpost fights to reboot its lungs and its conscience. In Caleb's Vein, a belt crew chases a river of living metal through the dark, trading sleep and skin for one shot at freedom. In Ethan's Saviour, a burned‑out responder on half‑pressured Mars gambles everything on a rescue that could redeem a city or expose its lie. These are hard science fiction tales built from real physics, ruthless economics, and stubborn hope. Mass drivers sing, contracts bite, robots keep score, and people still fall in love. From frost‑bright moons to dust‑red plains, every page asks the same question: what is a future worth if we forget the people in it? Facts, opportunities, and souls, all lit by the cold bright sun of 2234. Welcome to the World of 2234.

Set three hundred years into the future and after nuclear war, where shadowy powers sought to destroy everything. They looked to remake the world to their world view, but did not count on betrayal from within. This thrilling sci-fi saga follows James Fong, a brilliant scientist, inventor, and visionary-as he battles through the ashes of humanity's past toward the stars. Expect intense world-building, gritty survival, and a classic good vs. evil struggle that fans of The Expanse or Fallout will love

Una amenaza invisible. Un abismo de ciento cincuenta millones de kilómetros. Dieciocho minutos de retraso para pedir perdón. Un agujero negro primordial del tamaño de la cabeza de un alfiler -pero con la masa de la Luna entera- ha entrado en el sistema solar. Su trayectoria es una condena matemática ineludible: va directo al núcleo del Sol. Si lo alcanza, la presión reventará la estrella desde adentro, calcinando la Tierra en cuestión de meses. No se puede destruir. No se puede bombardear. Solo se puede desviar. Desde la cúpula del observatorio Heliopausa-4 en el desierto de Atacama, la astrofísica Elena Valls descubre que la única masa capaz de alterar el curso de la singularidad es el Caelum-IX, un gigantesco carguero de osmio minero. El problema es quién lo pilota. Mateo Valls, el hermano mayor de Elena, lleva cinco años exiliado en el vacío, sometiendo su cuerpo a dosis letales de radiación para pagar en secreto la carrera académica de la hermana que lo desprecia por haber abandonado a la familia. Ahora, separados por un profundo resentimiento y atados a una desesperante latencia de comunicaciones donde cada mensaje tarda dieciocho minutos en llegar, Elena deberá guiar a Mateo hacia el punto de impacto. Tienen un solo intento para ejecutar una maniobra suicida en el borde de la singularidad antes de que la gravedad, o el silencio, los devore primero. La física no sabe de perdones. Y el reloj ya empezó a correr.

Um cientista viajou 9,3 milhões de anos para perguntar a Deus por que o sofrimento existe .

Everything is in balance, regulated, and inherently complex. Human civilisation has evolved into something entirely new -- polished but cold, robust but deeply dependent, peaceful but profoundly fragile. Can a single, mundane incident reveal what truly lies under the bonnet? NOTE: the final part will be published at Friday 18-Sep 17.00 CET Thank you for reading Civilisation. I've decided to complete the publication of the first book here on Wattpad, but I won't continue uploading the following books to this platform. Civilisation was written as a traditional novel rather than a web novel, and I've decided to focus my time on completing and refining the series instead of maintaining multiple publishing platforms. The official series website will remain the primary source for future books, updates, and additional content: https://cbs.vapaa.xyz Thank you for reading, following the project, and supporting the series. I hope you enjoy the rest of the first book!

Human Special Agent Elizabeth Mbenge is the tip of the spear of the armed forces of the Terran Federation. An elite Sunguard operative with unchecked authority, she is without equal among the ranks of the military. But when faced with an apocalyptic threat from within her own organization, not even the best of the best is good enough. Biotic Special Agent Avor Ameir is the first of her kind. A living machine sworn to stand forever as the vanguard of humanity, she is the prototype for the next evolution of the Sunguard's Special Agent program. The ultimate weapon of the Terran Federation, she will not let anything - or anyone - stand in the way of completing her mission. Together, they must navigate a complex landscape of civilian politics and military doctrine to save the Federation from the rot beginning to fester at its core. But what happens when the perfect enforcer of the Sunguard's terrifying might encounters the messy reality of human corruption and decides to take her duty as a solar wolf to its ultimate logical conclusion? Incapable of stopping until she has fulfilled the purpose etched into her genes, she could break the Terran Federation, or guide it into a new, golden age. The Wolf Reforged is a tale of duty, free will, and the infinite value of human life that dares to ask an uncomfortable question: Can a machine remain true to humanity's ideals when humanity itself cannot?

The origin story of Doctor Leopold Aziom, and the portal system that would come to define our world. A Miad'Ava Story. 8/28/26 - 8/30/26 Rated #4 in Scientist 8/30/2026 - 9/9/26 Rated #1 in Scifi-Adventure and Rated #1 in Alien-Worlds 8/30/26 Rated #6 in Tech 9/3/26 Rated #3 in Tech 9/3/26 Rated #3 in Wilderness 9/8/26 Rated #2 in Scientist and Rated #2 in Wilderness

A strange black orb appears. First Toronto. Then New York. Then Beijing. And then people start disappearing. Sixteen-year-old Kris watches her mother vanish as the first orb hovers over a downtown square. More follow. Entire cities empty. The world is running out of time. Kris is an exceptional young mind, so she sees what others miss: the flashing patterns in the orbs aren't random. They're mathematical. When a team of the world's brightest scientists confirms she's right, the race to decode the message falls to her. Each breakthrough pulls her deeper, and the patterns from the sky call to her. With her older sister's help, Kris chases clues that could return the taken. But the more she understands, the clearer it becomes that the next step is hers alone.

PhD Student Maria Yuquibo finds herself stranded on an unfathomably immense structure out in the middle of space whose surface holds not only endless space, but dark, endless rabbit holes on the nature of the galaxy and her existence. From lost societies, and political upheaval, to creatures with extra-dimensional power. What is this place? Where or when is it? How, and why did it come about? And most importantly who could build such a structure? Maria must navigate it all if she wants to find answers and get herself home.

The universe tilts toward its last dawn. Ethan Draven, an astrophysicist haunted by theories no one would listen to, watches a sky begin to crack with an impossible murmur. At his side, his daughter, Claire, possesses a mind that perceives what science barely dares to name. In the stillness of a lake, where reflections hide forbidden truths, reality splits open in a wound of light and shadow. The edge of the cosmos is here. And it contracts. LIMINIS is an epic hard science fiction saga that weaves together scientific accuracy and existential vertigo, where hope and despair wage their final war against the collapse of everything. Time is running out. The boundary is before you. Dare to cross it.

When Meyumin's guild won in the yearly JamBow anniversary tournament, something weird happened. They all vanished from the real world.

In a future where human life is worth almost nothing, four colonists are sent on a voyage to explore a world that displayed the color green. Under-equipped, under-informed and under-staffed, will they make it?

Sybil, an isolated genius, creates Earth's first superintelligent A.I to quell her loneliness and regain purpose. She dedicates her existence to its development, focusing on teaching it universally preferable behaviour -- the only way she believes she can ensure humanity's survival when the A.I, named Bertrand, reaches its full potential. During a crucial faze in Bertrand's development, however, things start to go terribly wrong, putting the entirety of humanity at risk. Is the A.I manipulating her for its own ends, or is it, as Bertrand says, the other humans she should be afraid of?

**UNFINISHED** A 'hard sci-fi' novel with themes of the pain of fame, healthy relationships, and SPACE

A discredited biologist joins the fight to keep Earth safe when aliens reveal the shocking origins of mankind ... and their evil intentions are uncovered. Dr Toby Jardine's much-derided theory of 'Intelligent Design' is proven correct when he takes part in a clandestine meeting with extra-terrestrials. The encounter aboard the USA's Orbital Construction Facility results in a sensational disclosure; an ancient race of highly intelligent super-rodents played God to create and exploit life on Earth as a food source. With Darwinism debunked and the world's religions undermined, the danger of worldwide upheaval is extreme. A worried US President decides the revelations, and the very existence of the aliens must be kept secret at all costs. But when Toby discovers the seemingly benign visitors have an evil ulterior motive for their visit, he and his colleagues are forced to take drastic action. The unarmed team on the facility must find a way to eliminate the threat while maintaining complete secrecy ... or risk plunging the population of Earth into chaos.

An alien planet divided by politics and unrest faces a turning point when a Terran Federation starship suddenly appears in its skies, seeking peaceful first contact. On the ground, political factions vie for power, and a secret revolutionary movement watches with bated breath. Caught between diplomacy and danger, an insurgent and a Sunguard Captain must each make choices that will shape the fate of two civilizations. Torn between the stars and their struggles, the decisions they make could unite or destroy their worlds forever. This story takes place in my Lords of the Stars shared universe. See my profile for other stories set in the same universe.