Ringworld


Larry Niven - 1970
    Pierson's puppeteers, the aliens who discovered it, are understandably wary of encountering the builders of such an immense structure and have assembled a team of two humans, a mad puppeteer and a kzin, a huge cat-like alien, to explore it. But a crash landing on the vast edifice forces the crew on a desperate and dangerous trek across the Ringworld.

The Left Hand of Darkness


Ursula K. Le Guin - 1969
    His goal is to facilitate Winter's inclusion in a growing intergalactic civilization. But to do so he must bridge the gulf between his own views and those of the completely dissimilar culture that he encounters.Embracing the aspects of psychology, society, and human emotion on an alien world, The Left Hand of Darkness stands as a landmark achievement in the annals of intellectual science fiction.

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?

Red Mars


Kim Stanley Robinson - 1992
    For centuries, Mars has beckoned humans to conquer its hostile climate. Now, in 2026, a group of 100 colonists is about to fulfill that destiny.John Boone, Maya Toitavna, Frank Chalmers & Arkady Bogdanov lead a terraforming mission. For some, Mars will become a passion driving them to daring acts of courage & madness. For others it offers an opportunity to strip the planet of its riches. For the genetic alchemists, it presents a chance to create a biomedical miracle, a breakthrough that could change all we know about life & death. The colonists orbit giant satellite mirrors to reflect light to the surface. Black dust sprinkled on the polar caps will capture warmth. Massive tunnels, kilometers deep, will be drilled into the mantle to create stupendous vents of hot gases. Against this backdrop of epic upheaval, rivalries, loves & friendships will form & fall to pieces--for there are those who will fight to the death to prevent Mars from ever being changed.Brilliantly imagined, breathtaking in scope & ingenuity, Red Mars is an epic scientific saga, chronicling the next step in evolution, creating a world in its entirety. It shows a future, with both glory & tarnish, that awes with complexity & inspires with vision.

Doomsday Book


Connie Willis - 1992
    For her instructors in the twenty-first century, it meant painstaking calculations and careful monitoring of the rendezvous location where Kivrin would be received.But a crisis strangely linking past and future strands Kivrin in a bygone age as her fellows try desperately to rescue her. In a time of superstition and fear, Kivrin--barely of age herself--finds she has become an unlikely angel of hope during one of history's darkest hours.Connie Willis draws upon her understanding of the universalities of human nature to explore the ageless issues of evil, suffering, and the indomitable will of the human spirit.

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.

Perdido Street Station


China Miéville - 2000
    But when a half-bird, half-human creature known as the Garuda comes to him from afar, Isaac is faced with challenges he has never before encountered. Though the Garuda's request is scientifically daunting, Isaac is sparked by his own curiosity and an uncanny reverence for this curious stranger. Soon an eerie metamorphosis will occur that will permeate every fiber of New Crobuzon--and not even the Ambassador of Hell will challenge the malignant terror it evokes.

Flow My Tears, the Policeman Said


Philip K. Dick - 1974
    The night before he had been the top-rated television star with millions of devoted watchers. The next day he was just an unidentified walking object, whose face nobody recognised, of whom no one had heard, and without the I.D. papers required in that near future.When he finally found a man who would agree to counterfeiting such cards for him, that man turned out to be a police informer. And then Taverner found out not only what it was like to be a nobody but also to be hunted by the whole apparatus of society.It was obvious that in some way Taverner had become the pea in in some sort of cosmic shell game - but how? And why?Philip K. Dick takes the reader on a walking tour of solipsism's scariest margin in his latest novel about the age we are already half into.

Blood Music


Greg Bear - 1985
    When the authorities rule that he has exceeded his authorization, Vergil loses his job, but is determined to take his discovery with him.This is a novel Greg Bear wrote in 1985. For novelette by the same name written in 1983 and published in Analog magazine see here: Blood Music.

The Three-Body Problem


Liu Cixin - 2006
    An alien civilization on the brink of destruction captures the signal and plans to invade Earth. Meanwhile, on Earth, different camps start forming, planning to either welcome the superior beings and help them take over a world seen as corrupt, or to fight against the invasion. The result is a science fiction masterpiece of enormous scope and vision.

Way Station


Clifford D. Simak - 1963
    But what his neighbors must never know is that, inside his unchanging house, he meets with a host of unimaginable friends from the farthest stars.More than a hundred years before, an alien named Ulysses had recruited Enoch as the keeper of Earth's only galactic transfer station. Now, as Enoch studies the progress of Earth and tends the tanks where the aliens appear, the charts he made indicate his world is doomed to destruction. His alien friends can only offer help that seems worse than the dreaded disaster. Then he discovers the horror that lies across the galaxy...

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.

Gateway


Frederik Pohl - 1977
    and on reaches of unimaginable horror. When prospector Robinette Broadhead went out to Gateway on the Heechee spacecraft, he decided he would know which was the right mission to make him his fortune. Three missions later, now famous and permanently rich, Rob Broadhead has to face what happened to him and what he has become... in a journey into himself as perilous and even more horrifying than the nightmare trip through the interstellar void that he drove himself to take!

The Calculating Stars


Mary Robinette Kowal - 2018
    The ensuing climate cataclysm will soon render the earth inhospitable for humanity, as the last such meteorite did for the dinosaurs. This looming threat calls for a radically accelerated effort to colonize space, and requires a much larger share of humanity to take part in the process.Elma York’s experience as a WASP pilot and mathematician earns her a place in the International Aerospace Coalition’s attempts to put man on the moon, as a calculator. But with so many skilled and experienced women pilots and scientists involved with the program, it doesn’t take long before Elma begins to wonder why they can’t go into space, too.Elma’s drive to become the first Lady Astronaut is so strong that even the most dearly held conventions of society may not stand a chance against her.

Central Station


Lavie Tidhar - 2016
    Cultures collide in real life and virtual reality. The city is literally a weed, its growth left unchecked. Life is cheap, and data is cheaper.When Boris Chong returns to Tel Aviv from Mars, much has changed. Boris’s ex-lover is raising a strangely familiar child who can tap into the datastream of a mind with the touch of a finger. His cousin is infatuated with a robotnik—a damaged cyborg soldier who might as well be begging for parts. His father is terminally-ill with a multigenerational mind-plague. And a hunted data-vampire has followed Boris to where she is forbidden to return.Rising above them is Central Station, the interplanetary hub between all things: the constantly shifting Tel Aviv; a powerful virtual arena, and the space colonies where humanity has gone to escape the ravages of poverty and war. Everything is connected by the Others, powerful alien entities who, through the Conversation—a shifting, flowing stream of consciousness—are just the beginning of irrevocable change.At Central Station, humans and machines continue to adapt, thrive...and even evolve.