The Collapsing Empire


John Scalzi - 2017
    Humanity flows away from Earth, into space, and in time forgets our home world and creates a new empire, the Interdependency, whose ethos requires that no one human outpost can survive without the others. It’s a hedge against interstellar war -- and a system of control for the rulers of the empire.The Flow is eternal -- but it is not static. Just as a river changes course, The Flow changes as well, cutting off worlds from the rest of humanity. When it’s discovered that The Flow is moving, possibly cutting off all human worlds from faster than light travel forever, three individuals -- a scientist, a starship captain and the Empress of the Interdependency -- are in a race against time to discover what, if anything, can be salvaged from an interstellar empire on the brink of collapse.

The High Crusade


Poul Anderson - 1960
    The Wersgorix, whose scouting ship it is, are quite expert at taking over planets, and having determined from orbit that this one was suitable, they initiate standard world-conquering procedure. Ah, but this time it's no mere primitives the Wersgorix seek to enslave; they've launched their invasion against free Englishmen! In the end, only one alien is left alive; and Sir Roger's grand vision is born. He intends for the creature to fly the ship first to France to aid his King, then on to the Holy Land to vanquish the infidel. Unfortunately, he has not allowed for the treachery of the alien pilot, who instead takes the craft to his home planet, where, he thinks, these upstart barbarians will have no choice but to surrender. But that knavish alien little understands the indomitable will and clever resourcefulness of Englishmen, no matter how great the odds against them. . .

The Dreaming Void


Peter F. Hamilton - 2007
    Now an even greater danger has surfaced: a threat to the existence of the universe itself.At the very heart of the galaxy is the Void, a self-contained microuniverse that cannot be breached, cannot be destroyed, and cannot be stopped as it steadily expands in all directions, consuming everything in its path: planets, stars, civilizations. The Void has existed for untold millions of years. Even the oldest and most technologically advanced of the galaxy’s sentient races, the Raiel, do not know its origin, its makers, or its purpose.But then Inigo, an astrophysicist studying the Void, begins dreaming of human beings who live within it. Inigo’s dreams reveal a world in which thoughts become actions and dreams become reality. Inside the Void, Inigo sees paradise. Thanks to the gaiafield, a neural entanglement wired into most humans, Inigo’s dreams are shared by hundreds of millions–and a religion, the Living Dream, is born, with Inigo as its prophet. But then he vanishes.Suddenly there is a new wave of dreams. Dreams broadcast by an unknown Second Dreamer serve as the inspiration for a massive Pilgrimage into the Void. But there is a chance that by attempting to enter the Void, the pilgrims will trigger a catastrophic expansion, an accelerated devourment phase that will swallow up thousands of worlds. And thus begins a desperate race to find Inigo and the mysterious Second Dreamer. Some seek to prevent the Pilgrimage; others to speed its progress–while within the Void, a supreme entity has turned its gaze, for the first time, outward. . . .From the Hardcover edition.

Revelation Space


Alastair Reynolds - 2000
    Now one scientist, Dan Sylveste, will stop at nothing to solve the Amarantin riddle before ancient history repeats itself. With no other resources at his disposal, Sylveste forges a dangerous alliance with the cyborg crew of the starship Nostalgia for Infinity. But as he closes in on the secret, a killer closes in on him. Because the Amarantin were destroyed for a reason — and if that reason is uncovered, the universe—and reality itself — could be irrecoverably altered….

A Fire Upon the Deep


Vernor Vinge - 1992
    A Fire upon the Deep is the big, breakout book that fulfills the promise of Vinge's career to date: a gripping tale of galactic war told on a cosmic scale.Thousands of years hence, many races inhabit a universe where a mind's potential is determined by its location in space, from superintelligent entities in the Transcend, to the limited minds of the Unthinking Depths, where only simple creatures and technology can function. Nobody knows what strange force partitioned space into these "regions of thought," but when the warring Straumli realm use an ancient Transcendent artifact as a weapon, they unwittingly unleash an awesome power that destroys thousands of worlds and enslaves all natural and artificial intelligence.Fleeing the threat, a family of scientists, including two children, are taken captive by the Tines, an alien race with a harsh medieval culture, and used as pawns in a ruthless power struggle. A rescue mission, not entirely composed of humans, must rescue the children-and a secret that may save the rest of interstellar civilization.

Consider Phlebas


Iain M. Banks - 1987
    Billions had died, billions more were doomed. Moons, planets, the very stars themselves, faced destruction, cold-blooded, brutal, and worse, random. The Idirans fought for their Faith; the Culture for its moral right to exist. Principles were at stake. There could be no surrender.Within the cosmic conflict, an individual crusade. Deep within a fabled labyrinth on a barren world, a Planet of the Dead proscribed to mortals, lay a fugitive Mind. Both the Culture and the Idirans sought it. It was the fate of Horza, the Changer, and his motley crew of unpredictable mercenaries, human and machine, actually to find it, and with it their own destruction.

Ancestral Night


Elizabeth Bear - 2019
    Haimey and her small crew run afoul of pirates at the outer limits of the Milky Way, and find themselves on the run and in possession of universe-changing information.When authorities prove corrupt, Haimey realizes that she is the only one who can protect her galaxy-spanning civilization from the implications of this ancient technology—and the revolutionaries who want to use it for terror and war. Her quest will take her careening from the event horizon of the supermassive black hole at the galaxy’s core to the infinite, empty spaces at its edge.To save everything that matters, she will need to uncover the secrets of ancient intelligences lost to time—and her own lost secrets, which she will wish had remained hidden from her forever.

The Risen Empire


Scott Westerfeld - 2003
    Enemy Rix are machine-augmented humans who worship AI compound minds. Separated by light years, bound by an unlikely love, Zai and pacifist senator Nara Oxham face the Rix and hold the fate of the empire.

The Memory of Earth


Orson Scott Card - 1992
    the Oversoul watches Its task. programmed so many millennia ago. is to guard the human settlement on this planet-. -to protect this fragile remnant of Earth from all threats. To protect them. most of all. from themselves. The Oversoul has done its job well. There is no war on Harmony. There are no weapons of mass destruction. There is no technology that could lead to weapons of war. By control of the data banks. and subtle interference in the very thoughts of the people. the artificial intelligence has fulfilled its mission. But now there is a problem. In orbit. the Oversoul realizes that it has lost access to some of its memory banks. and some of its power systems are failing. And on the planet. men are beginning to think about power. wealth. and conquest.

Empress of Forever


Max Gladstone - 2019
    On the eve of her greatest achievement, she's trying to outrun those who are trying to steal her success.In the chilly darkness of a Boston server farm, Viv sets her ultimate plan into motion. A terrifying instant later, Vivian Liao is catapulted through space and time to a far future where she confronts a destiny stranger and more deadly than she could ever imagine. The end of time is ruled by an ancient, powerful Empress who blesses or blasts entire planets with a single thought. Rebellion is literally impossible to consider--until Vivian arrives. Trapped between the Pride, a ravening horde of sentient machines, and a fanatical sect of warrior monks who call themselves the Mirrorfaith, Viv must rally a strange group of allies to confront the Empress and find a way back to the world and life she left behind.A magnificent work of vivid imagination and universe-spanning action, Empress of Forever is a feminist Guardians of the Galaxy crossed with Star Wars and spiced with the sensibility and spirit of Iain M. Banks and William Gibson.

Childhood's End


Arthur C. Clarke - 1953
    Benevolent, they made few demands: unify earth, eliminate poverty, and end war. With little rebellion, humankind agreed, and a golden age began.But at what cost? With the advent of peace, man ceases to strive for creative greatness, and a malaise settles over the human race. To those who resist, it becomes evident that the Overlords have an agenda of their own. As civilization approaches the crossroads, will the Overlords spell the end for humankind . . . or the beginning?

Expendable


James Alan Gardner - 1997
    The ugly, the flawed, the misfit, the deformed, they are the unwanted, flung to the farthest corners of the galaxy to investigate hostile planets and strange, vicious creatures. Out there, there are a thousand different -- and terrible -- ways to die. Festina Ramos belongs to the well-trained, always-dwindling ranks of ECMs (Expendable Crew Members). Now she and her partner, Yarrun Derigha, have been ordered to escort the unstable Admiral Chee to Melaquin -- the feared "Planet of No Return"-- which has swallowed up countless Explorers before them without a trace.Obviously, this is meant to be the last mission for Ramos and Derigha. But it won't be, if Festina can help it.

Eon


Greg Bear - 1985
    NASA, NATO, and the UN sent explorers to the asteroid's surface...and discovered marvels and mysteries to drive researchers mad.For the Stone was from space--but perhaps not our space; it came from the future-but perhaps not our future; and within the hollowed asteroid was Thistledown. The remains of a vanished civilization. A human--English, Russian, and Chinese-speaking--civilization. Seven vast chambers containing forests, lakes, rivers, hanging cities...And museums describing the Death; the catastrophic war that was about to occur; the horror and the long winter that would follow. But while scientists and politicians bickered about how to use the information to stop the Death, the Stone yielded a secret that made even Earth's survival pale into insignificance.

We Are Legion (We Are Bob)


Dennis E. Taylor - 2016
    Bob Johansson has just sold his software company and is looking forward to a life of leisure. There are places to go, books to read, and movies to watch. So it's a little unfair when he gets himself killed crossing the street. Bob wakes up a century later to find that corpsicles have been declared to be without rights, and he is now the property of the state. He has been uploaded into computer hardware and is slated to be the controlling AI in an interstellar probe looking for habitable planets. The stakes are high: no less than the first claim to entire worlds. If he declines the honor, he'll be switched off, and they'll try again with someone else. If he accepts, he becomes a prime target. There are at least three other countries trying to get their own probes launched first, and they play dirty. The safest place for Bob is in space, heading away from Earth at top speed. Or so he thinks. Because the universe is full of nasties, and trespassers make them mad - very mad.

Crystal Rain


Tobias S. Buckell - 2006
    Looking for a new world to call their own, they brought with them a rich mélange of cultures, religions, and dialects from a far-off planet called Earth. Mighty were the old-fathers, with the power to shape the world to their liking—but that was many generations ago, and what was once known has long been lost. Steamboats and gas-filled blimps now traverse the planet, where people once looked up to see great silver cities in the sky.Like his world, John deBrun has forgotten more than he remembers. Twenty-seven years ago, he washed up onto the shore of Nanagada with no memory of his past. Although he has made a new life for himself among the peaceful islanders, his soul remains haunted by unanswered questions about his own identity.These mysteries take on new urgency when the fearsome Azteca storm over the Wicked High Mountains in search of fresh blood and hearts to feed their cruel, inhuman gods. Nanagada's only hope lies in a mythical artifact, the Ma Wi Jung, said to be hidden somewhere in the frozen north. And only John deBrun knows the device's secrets, even if he can't remember why or how!Crystal Rain is the much-anticipated debut novel by one of science fiction's newest and most promising talents.