Hard Science Fiction Space Opera

Chronicler Tsai Yini monitors the tachyon communication system, which transmits data faster than the speed of light. When classified results from an astrobiologist's research are leaked to her, she cannot believe what she reads. The report reveals that intelligent life forms exist on a tropical planet in the Gliese system. Their civilization is still in its infancy but revolves around an artifact of unknown origin that seems to influence their body chemistry.

March 15th, Earth Year 2290. The day the aliens returned. The memories are still fresh. Of colonies burning. Of millions dying in agony. Fifty years later, we’ve built up our strength. Using a wormhole, we colonized both sides of the galaxy. It was the worst mistake we could have made. Our enemy has returned and the wormhole has collapsed. Commander Thatcher finds himself on the wrong side of the divide. Separated from his pregnant wife by countless light years. He’s just been given command of a light armored cruiser. His first command.

Rigel is a thousand lightyears farther from the Core Worlds than Earth, so they suffer the first attacks. The mood at Central is jubilant. Our greatest rival is falling—now is the time to strike while they’re weak! Legion Varus is deployed to Jungle World, a vital planet deep in Rigellian territory. Our foes, fighting on two fronts, are driven back with ease. But one man questions the wisdom of this move. Should Earth expand with greed, aiding new monsters from the Galactic Rim? That lone voice of reason comes from James McGill.

Commodore Straker faces new enemies as neighboring interstellar empires decide his New Republic is a growing threat. A two-front war develops, and the Liberator must face both the Mutuality and the Hundred Worlds. Even as the fighting rages, the mysterious Opters are on the move. They make a diplomatic effort to reach out to Straker - but can he trust the Hive Masters? Will they help or stab him in the back?

Humanity had appeared to fend off the Sh'daar assault once and for all, though they never learned why the alien empire was driven to halt Earth's advancement toward technological Singularity. But in this war of worlds, victory is always elusive. And now a new battle begins. After 20 years of peace, not one but two fragile truces are unraveling. Alexander Koenig, the former Navy commander whose heroics forced the Sh'daar into submission, has won a second term as President of the United States of North America. But pursuing his mandate - sovereignty from the centuries-old Earth Confederation - becomes a risky proposition....

Ever since he joined Omega Force, Captain Jason Burke has lived with the underlying fear that one day Earth would be discovered. His desire to keep Earth's existence and location a secret has driven him to extremes, and kept him far away from his homeworld for a long time. But now Jason's greatest fear is realized, and a fleet of alien ships has attacked his planet. Omega Force rushes to Earth's defense, but the ships are like none they've ever encountered, and employ weapons they have no defense for.

Fleet of Worlds takes a closer look at Human-Puppeteer (Citizen) relations and the events leading up to Niven's first Ringworld novel. Kirsten Quinn-Kovacks is among the best and brightest of her people. She gratefully serves the gentle race that rescued her ancestors from a dying starship, gave them a world, and nurtures them still. If only the Citizens knew where Kirsten's people came from.

Two centuries after humanity colonized the stars, new dangers emerge. The peaceful inhabitants of the Conclave are threatened by expanding alien powers. Invaders threaten the star cluster, attacking our fringe settlements. Captain Bill Gorman has mysteriously disappeared. His clone, set aside for a dark day like this, awakens and begins to put together the pieces. What’s gone wrong out on the frontier? Why are our colonies being attacked by aliens while the Conclave worlds dream of better days? And what happened to the original Captain Gorman?

A novella set in the hard-scrabble world of James S. A. Corey's NYT best-selling Expanse series, Strange Dogs follows a family of colonists on Laconia where a new generation of humanity struggles with the profound changes that come with making a home on an alien world. Like many before them, Cara and her family ventured through the gates as scientists and researchers, driven to carve out a new life and uncover the endless possibilities of the unexplored alien worlds now within reach.

The Dusahn Empire has been contained for the moment. But there is much work to be done in order to keep them from reasserting their dominance over the Pentaurus sector. As much as Captain Scott wants to see the Empire destroyed, he may have no choice but to find a way to coexist with them.

Commander Joe Pikeman has his share of demons. But after a long deployment, he just wants to enjoy some home leave with his daughter. The galaxy has other plans. His last assignment takes him to Earth, humanity’s deserted homeworld. There, he finds Earth’s last settlement littered with the bodies of the people who lived there. As he hunts down those responsible, he runs head-first into some galaxy-shaking questions.

Commander Scott McNabb and the crew of the science vessel, Hermes, are three years into a five-year-long survey of the asteroid belt when they discover a derelict spaceship in orbit around a binary asteroid. The ship contains an experimental quantum device, lost while en route to a research colony on Europa.

Three against the stars! A sky pirate armed with superior weapons of his own invention.... First contact with an alien race dangerous enough to threaten the safety of two planets.... The arrival of an unseen dark sun whose attendant marauders aimed at the very end of civilization in this Solar System.... These were the three challenges that tested the skill and minds of the brilliant team of scientist-astronauts Arcot, Wade, and Morey.

Breq - the soldier who used to be a spaceship - is serving the emperor she swore to destroy. She's been given her own warship, her own crew, and ordered to the only place in the galaxy she would have agreed to go: to Athoek Station, to protect the family of the lieutenant she murdered in cold blood. Athoek was annexed by the Empire some 600 years ago, and by now everyone is fully 'civilised'. Or should be - but everything is not as tranquil as it appears.

The Darshik war machine is flagging, but the war is far from over. Even as an exhausted Federation military tenses up for a counterattack after repelling the last Darshik invasion, reports are coming in of a new, more powerful class of ship that's striking deep into Terran space. Captain Jackson Wolfe has been given the fleet's newest, most advanced destroyer and tasked with eliminating this new threat before it can claim any more human lives. What he finds, however, is immeasurably more dangerous than just some new class of starship....

It is 2076: Lancer, Earth’s first starship, is on a mission to find interstellar civilizations. Although astronaut Nigel Walmsley’s experiences with alien encounters make him the expert, no one believes Nigel’s theory that machines are the dominant intelligent beings left in the galaxy and that their purpose is to annihilate all organic life. Then the explorers discover once-living planets where only machines remain – and ruined worlds where fugitive survivors must evade omnipresent and lethally advanced A.I. warships.

Although the exciting military career she hoped for never got off the ground, Ky Vatta ended up seeing plenty of combat when she took the helm of one of the commercial transport vessels in her family's fleet...and steered it into a full-blown war. Now the lessons she learned in that trial by fire are about to pay off - because this time, the war has come to her. Someone has launched a full-throttle offensive against Vatta Transport Ltd., Ky's father's interstellar shipping empire.

Covert agent Sigmund Ausfaller is Earth's secret weapon, humanity's best defense against all conspiracies, real and imaginary, and all foes both human and alien. Who better than a brilliant paranoid to expose the devious plots of others?

But Sigmund may finally have met his match in Nessus, representative of the secretive Puppeteers, the elder race who wield vastly superior technologies.

Kylara Vatta is the only daughter in a family full of sons, and her father's only child to buck tradition by choosing a military career instead of joining the family business. For Ky, it's no contest: Even running the prestigious Vatta Transport Ltd. shipping concern can't hold a candle to shipping out as an officer aboard an interstellar cruiser. It's adventure, not commerce, that stirs her soul. And despite her family's misgivings, there can be no doubt that a Vatta in the service will prove a valuable asset. But with a single error in judgment, it all comes crumbling down.

Habitats is the seventh in a series of near future sci-fi/thrillers, whose young heroine Ell Donsaii has a nerve mutation which has made her a genius as well as an athletic phenomenon. In Habitats, she is continuing to find uses for the quantum-entangled wormholes she discovered. These wormholes aren’t big enough to send people through, yet they are making huge changes in our world.