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...

Inherit the Stars


James P. Hogan - 1977
    They called him Charlie. He had big eyes, abundant body hair and fairly long nostrils. His skeletal body was found clad in a bright red spacesuit, hidden in a rocky grave. They didn't know who he was, how he got there, or what had killed him. All they knew was that his corpse was 50,000 years old; and that meant that this man had somehow lived long before he ever could have existed!

The Pride of Chanur


C.J. Cherryh - 1981
    Naked-hided, blunt toothed and blunt-fingered, Tully was the sole surviving member of his company -- a communicative, spacefaring species hitherto unknown -- and he was a prisoner of his discoverer/ captors the sadistic, treacherous kif, until his escape onto the hani ship The Pride of Chanur. Little did he know when he threw himself upon the mercy of The Pride and her crew that he put the entire hani species in jeopardy and imperiled the peace of the Compact itself. For the information this fugitive held could be the ruin or glory of any of the species at Meetpoint Station. Cover art by Michael Whelan

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.

Proxima


Stephen Baxter - 2013
    The age of star formation is long past. Yet there is life here, feeding off the energies of the stellar remnants, and there is mind, a tremendous galaxy-spanning intelligence each of whose thoughts lasts a hundred thousand years. And this mind cradles memories of a long-gone age when a more compact universe was full of light... The 27th century: Proxima Centauri, an undistinguished red dwarf star, is the nearest star to our sun. How would it be to live on such a world?

Semiosis


Sue Burke - 2018
    The planet provides a lush but inexplicable landscape--trees offer edible, addictive fruit one day and poison the next, while the ruins of an alien race are found entwined in the roots of a strange plant. Conflicts between generations arise as they struggle to understand one another and grapple with an unknowable alien intellect.

The Mote in God's Eye


Larry Niven - 1974
    Intelligent beings are finally found from the Mote, an isolated star in a thick dust cloud. The bottled-up ancient civilization, at least one million years old, are welcoming, kind, yet evasive, with a dark problem they have not solved in over a million years.

Against a Dark Background


Iain M. Banks - 1993
    On an island with a glass shore - relic of some even more ancient conflict - she discovers she is to be hunted by the Huhsz, a religious cult which believes she is the last obstacle before their faith's apotheosis. She has to run, knowing her only hope of finally escaping the Huhsz is to find the last of the ancient, apocalyptically powerful but seemingly cursed Lazy Guns. But that is just the first as well as the final step on a search that takes her on an odyssey through the exotic Golterian system and results in both a trail of destruction and a journey into her own past, as well as that of her family and the system itself; a journey that changes everything.

Existence


David Brin - 2012
    Gerald Livingston is an orbital garbage collector. For a hundred years, people have been abandoning things in space, and someone has to clean it up. But there’s something spinning a little bit higher than he expects, something that isn’t on the decades’ old orbital maps. An hour after he grabs it and brings it in, rumors fill Earth’s infomesh about an “alien artifact.” Thrown into the maelstrom of worldwide shared experience, the Artifact is a game-changer. A message in a bottle; an alien capsule that wants to communicate. The world reacts as humans always do: with fear and hope and selfishness and love and violence. And insatiable curiosity.

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.

A Thousand Words for Stranger


Julie E. Czerneda - 1997
    The mysterious Captain Morgan has a starship. But if she goes with him, who will be at risk? Meet the Clan, shadowy figures of unfathomable power. Meet Huido, the lobster-like restauranteur. Meet the Trade Pact Enforcers, who have their own intentions. For events are beginning to unfold that will affect them all.Originally the first of the Trade Pact Universe Trilogy, THOUSAND is now book 4 of The Clan Chronicles. The three books of the Stratification Cycle, REAP THE WILD WIND, RIDERS OF THE STORM, and RIFT IN THE SKY tell the story of the Clan through the eyes of Sira's direct ancestor. The series will conclude with the Reunification Cycle, currently pestering the author.

Noumenon


Marina J. Lostetter - 2017
    But one uncertainty remains: Where do we go? Astrophysicist Reggie Straifer has an idea. He’s discovered an anomalous star that appears to defy the laws of physics, and proposes the creation of a deep-space mission to find out whether the star is a weird natural phenomenon, or something manufactured.The journey will take eons. In order to maintain the genetic talent of the original crew, humankind’s greatest ambition—to explore the furthest reaches of the galaxy—is undertaken by clones. But a clone is not a perfect copy, and each new generation has its own quirks, desires, and neuroses. As the centuries fly by, the society living aboard the nine ships (designated “Convoy Seven”) changes and evolves, but their mission remains the same: to reach Reggie’s mysterious star and explore its origins—and implications.A mosaic novel of discovery, Noumenon—in a series of vignettes—examines the dedication, adventure, growth, and fear of having your entire world consist of nine ships in the vacuum of space. The men and women, and even the AI, must learn to work and live together in harmony, as their original DNA is continuously replicated and they are born again and again into a thousand new lives. With the stars their home and the unknown their destination, they are on a voyage of many lifetimes—an odyssey to understand what lies beyond the limits of human knowledge and imagination.

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.

Rocannon's World


Ursula K. Le Guin - 1966
    Earth scientist Rocannon is on that world, and he sees his friends murdered and his spaceship destroyed. Marooned among alien peoples, he leads the battle to free this new world - and finds that legends grow around him even as he fights.

A Darkling Sea


James L. Cambias - 2014
    The Terran explorers have made an uneasy truce with the Sholen, their first extraterrestrial contact: so long as they don’t disturb the Ilmataran habitat, they’re free to conduct their missions in peace.But when Henri Kerlerec, media personality and reckless adventurer, ends up sliced open by curious Ilmatarans, tensions between Terran and Sholen erupt, leading to a diplomatic disaster that threatens to escalate to war.Against the backdrop of deep-sea guerrilla conflict, a new age of human exploration begins as alien cultures collide. Both sides seek the aid of the newly enlightened Ilmatarans. But what this struggle means for the natives—and the future of human exploration—is anything but certain, in A Darkling Sea by James Cambias.