Nemesis


Isaac Asimov - 1989
    In the twenty-third century pioneers have escaped the crowded earth for life in self-sustaining orbital colonies.  One of the colonies, Rotor, has broken away from the solar system to create its own renegade utopia around an unknown red star two light-years from Earth:  a star named Nemesis.  Now a fifteen-year-old Rotorian girl has learned of the dire threat that nemesis poses to Earth's people--but she is prevented from warning them.  Soon she will realize that Nemesis endangers Rotor as well.  And so it will be up to her alone to save both Earth and Rotor as--drawn inexorably by Nemesis, the death star--they hurtle toward certain disaster.

Chasm City


Alastair Reynolds - 2001
    Now, with the entire city corrupted -from the people to the very buildings they inhabit- only the most wretched sort of existence remains. For security operative Tanner Mirabel, it is the landscape of nightmares through which he searches for a low-life postmortal killer. But the stakes are raised when his search brings him face to face with a centuries-old atrocity that history would rather forget.

Time Enough for Love


Robert A. Heinlein - 1973
    Heinlein's longest and most ambitious work, it is the story of a man so in love with Life that he refused to stop living it; and so in love with Time that he became his own ancestor.

Sundiver


David Brin - 1980
    Did some cryptic patron race begin the job long ago, then abandon us? Or did we leap all by ourselves? That question burns, yet a greater mystery looms ahead, in the furnace of a star. Under the caverns of Mercury, Expedition Sundiver prepares for the most momentous voyage in our history – into the boiling inferno of the sun, seeking our destiny in the cosmic order of life.

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.

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. . .

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.

Hammered


Elizabeth Bear - 2004
    Once she was somebody’s enemy. Now the former Canadian special forces warrior lives on the hellish streets of Hartford, Connecticut, in the year 2062. Racked with pain, hiding from the government she served, running with a crime lord so she can save a life or two, Jenny is a month shy of fifty, and her artificially reconstructed body has started to unravel. But she is far from forgotten. A government scientist needs the perfect subject for a high-stakes project and has Jenny in his sights. Suddenly Jenny Casey is a pawn in a furious battle, waged in the corridors of the Internet, on the streets of battered cities, and in the complex wirings of her half-man-made nervous system. And she needs to gain control of the game before a brave new future spins completely out of control.

The Legacy of Heorot


Larry Niven - 1987
    Avalon seems perfect, a verdant, livable world still in its prehistoric age. The biologists and engineers who busy themselves planting and building scoff at the warnings of professional soldier Cadmann Weyland until a large, unnaturally fast and cunning predator begins stalking the colony. Learning how to kill the beast is only the first step, for they must then reevaluate their entire understanding of Avalon's ecology.

The Engines of God


Jack McDevitt - 1994
    Now, as faster-than-light drive opens the stars to exploration, humans are finding other relics of the race they call the Monument-Makers - each different, and each heartbreakingly beautiful. But except for a set of footprints on Jupiter's moon Iapetus, there is no trace of the enigmatic race that has left them behind. Then a team of scientists working on a dead world discover an ominous new image of the Monument-Makers. Somehow it all fits with other lost civilizations, and possibly with Earth's own future. And distant past. But Earth itself is on the brink of ecological disaster - there is no time to search for answers. Even to a question that may hold the key to survival for the entire human race...

Grass


Sheri S. Tepper - 1989
    But before humanity arrived, another species had already claimed Grass for its own. It too had developed a culture...... Now a deadly plague is spreading across the stars, leaving no planet untouched, save for Grass. But the secret of the planet's immunity hides a truth so shattering it could mean the end of life itself.

Acorna: The Unicorn Girl


Anne McCaffrey - 1997
    A trio of grizzled prospectors found her drifting in an escape pod amid the asteroids, adopted her, and took her to the bandit planet Kezdet, a place where no questions are asked and the girl might grow up free.But Kezdet has its own dark secret. The prosperity of the planet is based on a hideous trade in child slave labor, administered by "The Piper" -- a mystery man with special plans for Acorna and her powers. But free little girls have a way of growing into freedom-loving young women, and Acorna has special plans all her own. . .

Light


M. John Harrison - 2002
    John Harrison’s dangerously illuminating new novel, three quantum outlaws face a universe of their own creation, a universe where you make up the rules as you go along and break them just as fast, where there’s only one thing more mysterious than darkness.In contemporary London, Michael Kearney is a serial killer on the run from the entity that drives him to kill. He is seeking escape in a future that doesn’t yet exist—a quantum world that he and his physicist partner hope to access through a breach of time and space itself. In this future, Seria Mau Genlicher has already sacrificed her body to merge into the systems of her starship, the White Cat. But the “inhuman” K-ship captain has gone rogue, pirating the galaxy while playing cat and mouse with the authorities who made her what she is. In this future, Ed Chianese, a drifter and adventurer, has ridden dynaflow ships, run old alien mazes, surfed stellar envelopes. He “went deep”—and lived to tell about it. Once crazy for life, he’s now just a twink on New Venusport, addicted to the bizarre alternate realities found in the tanks—and in debt to all the wrong people.Haunting them all through this maze of menace and mystery is the shadowy presence of the Shrander—and three enigmatic clues left on the barren surface of an asteroid under an ocean of light known as the Kefahuchi Tract: a deserted spaceship, a pair of bone dice, and a human skeleton.

Embassytown


China Miéville - 2011
    She cannot speak the Ariekei tongue, but she is an indelible part of it, having long ago been made a figure of speech, a living simile in their language.When distant political machinations deliver a new ambassador to Arieka, the fragile equilibrium between humans and aliens is violently upset. Catastrophe looms, and Avice is torn between competing loyalties—to a husband she no longer loves, to a system she no longer trusts, and to her place in a language she cannot speak yet speaks through her.

Dark Orbit


Carolyn Ives Gilman - 2015
    When a team of scientists is assembled to investigate this world, exoethnologist Sara Callicot is recruited to keep an eye on an unstable crewmate. Thora was once a member of the interplanetary elite, but since her prophetic delusions helped mobilize a revolt on Orem, she’s been banished to the farthest reaches of space, because of the risk that her very presence could revive unrest.Upon arrival, the team finds an extraordinary crystalline planet, laden with dark matter. Then a crew member is murdered and Thora mysteriously disappears. Thought to be uninhabited, the planet is in fact home to a blind, sentient species whose members navigate their world with a bizarre vocabulary and extrasensory perceptions.Lost in the deep crevasses of the planet among these people, Thora must battle her demons and learn to comprehend the native inhabitants in order to find her crewmates and warn them of an impending danger. But her most difficult task may lie in persuading the crew that some powers lie beyond the boundaries of science.