But Worlorn isn’t the world Dirk imagined, and Gwen Delvano is no longer the woman he once knew. She is bound to another man, and to a dying planet that is trapped in twilight. Gwen needs Dirk’s protection, and he will do anything to keep her safe, even if it means challenging the barbaric man who has claimed her. But an impenetrable veil of secrecy surrounds them all, and it’s becoming impossible for Dirk to distinguish between his allies and his enemies. In this dangerous triangle, one is hurtling toward escape, another toward revenge, and the last toward a brutal, untimely demise.

    A college professor and other oddballs are dropped onto a bleak world near a giant blue cube -- with no idea how to proceed.

    After all, the planet he’s orbiting is frozen and sunless, and the cities are dead. But when Toby wakes again, he’s surprised to discover a thriving planet, a strange and prosperous galaxy, and something stranger still—that he’s been asleep for 14,000 years.Welcome to the Lockstep Empire, where civilization is kept alive by careful hibernation. Here cold sleeps can last decades and waking moments mere weeks. Its citizens survive for millennia, traveling asleep on long voyages between worlds. Not only is Lockstep the new center of the galaxy, but Toby is shocked to learn that the Empire is still ruled by its founding family: his own.Toby’s brother Peter has become a terrible tyrant. Suspicious of the return of his long-lost brother, whose rightful inheritance also controls the lockstep hibernation cycles, Peter sees Toby as a threat to his regime. Now, with the help of a lockstep girl named Corva, Toby must survive the forces of this new Empire, outwit his siblings, and save human civilization.Karl Schroeder's Lockstep is a grand innovation in hard SF space opera.

    Hundreds of years have passed, and all that remains of the time before are fragmented memories distorted by superstition -- as a tragically reduced populace suffers greatly under the tyranny of a repressive ruling order. But destiny has chosen Dismé Latimer to lead a wasted world out of the darkness ... with a book. Written by a courageous scientist ancestor, it is a sacred, unsettling tome rife with disturbing ideas and revelations ... and an impossible hope that compels a gentle, troubled young woman to abandon her abusive home in search of truth and her true self. But common "wisdom" and lore warn of grave dangers out in the world. Evil is there, a malevolence beyond imagining. And in the depths of the Earth, a gargantuan beast asleep for centuries has begun to stir ...

    But when she learned the truth about the war the Confederation was fighting, she left the military for good.But Torin couldn’t walk away from preserving and protecting everything the Confederation represented. Instead, she drew together an elite corps of friends and allies to take on covert missions that the Justice Department and the Corps could not—or would not—officially touch. Torin just hoped the one they were about to embark on wouldn’t be the death of them.Ancient H’san grave goods are showing up on the black market—grave goods from just before the formation of the Confederation, when the H’san gave up war and buried their planet-destroying weapons…as grave goods for the death of war. Someone is searching for these weapons and they’re very close to finding them. As the Elder Races have turned away from war, those searchers can only be members of the Younger Races.Fortunately, only the Corps Intelligence Service has this information. Unfortunately, they can do nothing about it—bound by laws of full disclosure, their every move is monitored.Though Torin Kerr and her team are no longer a part of the military, the six of them tackling the H’san defenses and the lethally armed grave robbers are the only chance the Confederation has. The only chance to avoid millions more dead.But the more Torin learns about the relationship between the Elder Races and the Younger, the more she begins to fear war might be an unavoidable result.

    This is the story of my three deaths, and my life between. My name is Khemri.Taken from his parents as a child and equipped with biological and technological improvements, Khemri is now an enhanced human being, trained and prepared for the glory of becoming a Prince of the Empire. Not to mention the ultimate glory: should he die, and be deemed worthy, he will be reborn...Which is just as well, because no sooner has Prince Khemri graduated to full Princehood than he learns the terrible truth behind the Empire: there are ten million princes, and all of them want each other dead.

    Ben Rollins, head of Harvard's exoplanet research team, is told by NASA after being dragged out of bed in the middle of the night. His first instinct is to call his daughter, Jessica, who's vacationing in Italy with his wife. "Something's coming," he tells them. "A hundred times the mass of the sun. We can't see it, don't know what it is yet, but they're calling it Nomad--and in just months, the Earth may be destroyed."But what is it? And how did they miss detecting it until now? In a frantic race against time, Dr. Rollins must unravel Nomad's secrets. A mysterious clue surfaces in his old research papers from the end of the Cold War, more than thirty years earlier...The world erupts into chaos as the end approaches--and Ben discovers that his wife and daughter are trapped in Europe. The key to humanity's survival rests in the final answers Dr. Rollins pieces together, in the midst of his desperate scramble across continents to find his family before Nomad swallows the planet.MORE ABOUT NOMADA story of family and redemption set amid a brand new category of cataclysm--all the more plausible and terrifying as the science behind it is vetted by a team of world-class astrophysicists from CERN, SETI, the Keck Observatory and more. It even has its own simulation video, included at the end of the book.

    Now they own us.The Legend of ZERO: Forging Zero is the epic journey of 14-year-old Joe Dobbs in a post-apocalyptic universe following a massive galactic empire's invasion of Earth. The oldest of the children drafted from humanity’s devastated planet, Joe is impressed into service by the alien Congressional Ground Force—and becomes the unwitting centerpiece in a millennia-long alien struggle for independence. Once his training begins, one of the elusive and prophetic Trith appears to give Joe a spine chilling prophecy that the universe has been anticipating for millions of years: Joe will be the one to finally shatter the vast alien government known as Congress. And the Trith cannot lie.…But first Joe has to make it through bootcamp.

    It pushed Earth through the greatest technological evolution ever known, while warning that time travel is forbidden, and transgressors will be eliminated.Distant descendants of this ultra high-tech Earth live in parochial simplicity on the far-flung worlds of the New Republic. Their way of life is threatened by the arrival of an alien information plague known as the Festival. As forbidden technologies are literally dropped from the sky, suppressed political factions descend into revolutionary turmoil.A battle fleet is sent from Earth to destroy the Festival, but Spaceship engineer Martin Springfield and U.N. diplomat Rachel Mansour have been assigned rather different tasks. Their orders are to diffuse the crisis or to sabotage the New Republic's war-fleet, whatever the cost, before the Eschaton takes hostile action on a galactic scale.

    In this new work by the author of "Flyboy Action Figure Comes with Gasmask", a punk of the future undergoes intergalactic culture shock when he travels to the underwater planet of Octavia.

    For the first time in one volume: every word Bruce Sterling has ever written on the Shapers-Mechanists Universe.In the last decade, Sterling has emerged a pioneer of crucial, cutting-edge science fiction. Now Ace Books is proud to offer Sterling's stunning world of the Schismatrix--where Shaper revolutionaries struggle against aristocratic Mechanists for ultimate control of man's destiny. This volume includes the classic full-length novel, Schismatrix, plus thousands of words of mind-bending short fiction.

    Irina isn’t rich, not quite, but she does have an artificial memory that gives her perfect recall and lets her act as a medium between her various employers and their AIs, which are complex to the point of opacity. It’s a good gig, paying enough for the annual visits to the Mayo Clinic that keep her from aging.Kern has no such access; he’s one of the many refugees in the sprawling drone-built favelas on the city’s periphery, where he lives like a monk, training relentlessly in martial arts, scraping by as a thief and an enforcer. Thales is from a different world entirely—the mathematically inclined scion of a Brazilian political clan, he’s fled to L.A. after the attack that left him crippled and his father dead.A ragged stranger accosts Thales and demands to know how much he can remember. Kern flees for his life after robbing the wrong mark. Irina finds a secret in the reflection of a laptop’s screen in her employer’s eyeglasses. None are safe as they’re pushed together by subtle forces that stay just out of sight.Vivid, tumultuous, and propulsive, Void Star is Zachary Mason’s mind-bending follow-up to his bestselling debut, The Lost Books of the Odyssey.

    Named an ALA Best Book for Young Adults, Cat's story has been continued by Hugo-award winning and international best-selling author Joan D. Vinge with the very popular Catspaw and Dreamfall. Now, 25 years later, this special anniversary edition of Psion contains a new introduction by the author and "Psiren," a story never before included in any trade edition of Psion. This tough, gritty tale of an outsider whose only chance for redemption is as an undercover agent for an interstellar government that by turns punishes and helps him, is as fresh and powerful today as it was in 1982.

    The Last Watch, where a handful of soldiers stand between humanity and annihilation.The Divide.It’s the edge of the universe.Now it’s collapsing—and taking everyone and everything with it.The only ones who can stop it are the Sentinels—the recruits, exiles, and court-martialed dregs of the military.At the Divide, Adequin Rake, commanding the Argus, has no resources, no comms—nothing, except for the soldiers that no one wanted.They're humanity's only chance.

    But now, national bestselling author William C. Dietz goes back to the Legion’s early days with the story of one recruit’s rebirth and redemption… Hundreds of years in the future, much has changed. Advances in medicine, technology, and science abound. Humanity has gone to the stars, found alien life, and established an empire. But some things never change... All her life, Lady Catherine Carletto (called Cat) has lived for nothing but the next party, the next lover, the next expensive toy. Until, in a bloodthirsty power grab, Imperial Princess Ophelia and her cadre of synth assassins murder her brother the emperor, and go on to purge the galaxy of his friends and supporters—including Cat’s family. The Carlettos are known to be staunch supporters of the Emperor and Carletto Industries has been in the forefront of his pet project—developing cybernetic technology for use by the masses. Now Cat, one of the last surviving Carlettos, is on the run. And, like countless others before her, she finds her sanctuary among the most dangerous of society’s misfits. Welcome to the Legion. Cat Carletto vanishes, and in her place stands Legion recruit Andromeda McKee. A woman with a mission—to bring down Empress Ophelia—or die trying.