Hard Science Fiction Space Opera

The generation ship Peerless is in search of advanced technology capable of sparing their home planet from imminent destruction. In theory, the ship is traveling fast enough that it can traverse the cosmos for generations and still return home only a few years after they departed. But a critical fuel shortage threatens to cut their urgent voyage short, even as a population explosion stretches the ship’s life-support capacity to its limits.

When a young physicist unveils an efficient star drive capable of reaching the core of the galaxy, veteran star pilot Priscilla "Hutch" Hutchins finds herself back in the deepest reaches of space, and on the verge of discovering the origins of the deadly Omega clouds that continue to haunt her.

Trapped on an alternate Earth, the combined crews of a crashed Russian spaceship, a British expeditionary force and a group of strays from the future must work together to survive, escape and discover what led them to this point. All are from parallel universes where small changes in history led to different realities, and the tensions between the groups are rising.

Someone just killed Tanis Richards and replaced her with an Infiltrator Chameleon. While finally getting some much-needed shore leave on Mars, Tanis gets a message from Harm Ellis with instructions to go to Ceres and hunt for a missing operative...except she never makes it. At least, that's what she'd like her would-be killers to think. With Darla's help, Tanis goes deep undercover, tracking the Infiltrator Chameleon from world to world, only to discover that it intends to kill a head of state in her name.

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.

Commander Tanis Richards has finally come into port after a seven month tour on the edge of Jovian space, and she's looking forward to some much deserved shore leave. But Tanis's commanding officer has other things in mind for her. Enfield Technologies has developed a new technique to pair enhanced L2 humans with AIs, and the military wants Tanis to undergo the procedure. Though she feared the worst, after meeting Darla, Tanis realizes that having an AI - especially a fabulously wealthy one - is better than she'd ever imagined. Darla foots the bill for Tanis to enjoy her convalescence.

Center of Gravity is the second book in the explosive Star Carrier series by Ian Douglas - and a breathtaking new high in military SF, the strongest of the science fiction subgenres. Battlestar Galactica fans will adore this saga of ultimate war in deep space, as humankind risks its very future, battling a vast alien evil empire in order to achieve transcendence and become a major power in the universe.

Luck has always run in both directions for Naval Commandant Nicholas Seafort. While he has managed to save the Hope Nation colony from alien attack, he and his friends have paid a heavy price. Most recently his exploits have earned him a dignified position as an instructor at the United Nations Naval Academy. But as Seafort suspects, trouble isn't far behind. A return to Earth means a return to his roots, some of which he wishes would remain buried.

While recovering from the physical and emotional wounds he sustained in Challenger's Hope, Nick Seafort is named as the liaison between the wealthy planters of Hope Nation and the United Nations Navy. The lurking, acid-spewing, fish-shaped aliens are a real threat, and everyone is on edge. When the fleet returns to Earth, dissent grows among the people of Hope Nation, who feel abandoned by the military and left at the mercy of the alien horde.

Time is running out for the planet Jai. The artificially intelligent Gods who rule the galaxy have withdrawn their protection from the chaos-ravaged world, just as their most ancient enemy closes in. For Yasira Shien, who has devoted herself to the fragile planet's nascent rebellion, it's time to do or die—and the odds are overwhelming. Enter Dr. Evianna Talirr.

Still reeling from a former teammate's betrayal, Commonwealth operative Simon Kovalic and his band of misfit spies have no time to catch their breath before being sent on another impossible mission: to pull off the daring heist of a quasi-mythical alien artifact, right out from under the nose of the galaxy's most ruthless crime lord. But their cold war rivals, the Illyrican Empire, want the artifact for themselves. And Kovalic's newest recruit, Specialist Addy Sayers, is a volatile ex-con with a mean hair-trigger who might put the whole mission at risk.

Tanis Richards, commander of the TSS Kirby Jones and her crew are at the tail end of a long patrol on the fringes of the Terran Hegemony when they come across a freighter suspected of smuggling goods out of InnerSol. The Norse Wind looks like just another dumpy cargo ship hauling goods across the Sol System, but someone up the chain thinks the vessel is worth looking into. Tanis and her boarding team gear up for another routine inspection that turns into anything but as the two crews struggle for supremacy out in the cold dark between worlds.

The struggle for survival sharpens as resources dwindle, technology fails, and the grim reality of life on Donovan unfolds. Supervisor Kalico Aguila has bet everything on a fragile settlement far south of Port Authority. There, she has carved a farm and mine out of wilderness. But Donovan is closing in. When conditions couldn't get worse, a murderous peril descends out of Donovan's sky - one that will leave Kalico bleeding and shattered.

The truth of discovery is on mankind's horizon, a Red Horizon. For nearly four long years, the world's superpowers have mobilized their people and resources in preparation for the next discovery, Mars. The race against one another pales in comparison to the inherent dangers of travelling through the vastness of the cosmos, going where mankind has never gone before.

The United States of North America is now engaged in a civil war with the Earth Confederation, which wants to yield to the demands of the alien Sh'daar, limit human technology, and become a part of the Sh'daar Galactic Collective. USNA President Koenig believes that surrendering to the Sh'daar will ultimately doom humankind. But when highly advanced, seemingly godlike aliens appear through an artificial wormhole in the Omega Centauri Cluster 16,000 light years from Earth, President Koenig is faced with a tremendous choice.

The Theocracy has been dead for 20 years, and the Polity rules on Masada - but it is an order that the rebels of the Tidy Squad cannot accept, and the iconic Jeremiah Tombs is top of their hitlist. Tombs, meanwhile, has escaped his sanatorium. His insanity must be cured, because the near-mythical hooder, called "the Technician", that attacked him all those years ago, did something to his mind even the AIs fail to understand. Tombs might possess information about the suicide of an entire alien race.

Chief Roach's victory over the ferocious Quatro won't last long, it seems. Strange meteorites have fallen to the surface of Eresos, containing mechs - quadruped mechs, clearly designed for the enemy. If the quad mechs fall into the enemy's possession before Roach can get them to the space elevator, humanity will lose the advantage granted by their own MIMAS mechs, and they'll be right back to where they were: outmatched and overpowered by the murderous alien beasts.

It is the distant future. The world known as Virga is a fullerene balloon three thousand kilometers in diameter, filled with air, water, and aimlessly floating chunks of rock. The humans who live in this vast environment must build their own fusion suns and "towns" that are in the shape of enormous wood and rope wheels that are spun for gravity. Young, fit, bitter, and friendless, Hayden Griffin is a very dangerous man. He's come to the city of Rush in the nation of Slipstream with one thing in mind: to take murderous revenge for the deaths of his parents six years ago.

Sable Keech is a walking dead man. Was he resurrected because he was infected by the Spatterjay virus, or it took place late in a tank of seawater? Taylor Bloc wants to know the truth. He also wants more – adulation, power, control – and will go to any lengths to achieve them. An ancient hive mind has sent an agent to this uncertain world. Does it merely want to obtain the poison 'sprine' that is crucial to immortality? Erlin, still faced with the ennui of immortality, is interrupted by an angry whelkus titanicus, and begins a strange journey.

Having successfully repelled the Resistance incursion into the Sol system, Terran Fleet Command must now deal with the far-flung worlds of the Sajeth Collective, which sponsored the attack. Task forces are dispatched to Damara and Lesheera to begin the first human blockades of entire planets. With the only ships fast enough to quickly bring the fight to the enemy's doorstep, TFC must do so alone, leaving only minimal forces behind to safeguard the Earth.