A Matter of Oaths


Helen S. Wright - 1988
    For no crime on his record, the young officer had been identity wiped, and his innumerable, now-forgotten enemies were still tracking him across the galaxy.

Carnival


Elizabeth Bear - 2006
    But ever since a disastrous mission, they have been living separate lives in a universe dominated by a ruthless Coalition - one that is about to reunite them.The pair are dispatched to New Amazonia as diplomatic agents. Allegedly, they are to return priceless art. Covertly, they seek to tap its energy supply. But in reality, one has his mind set on treason. And among the extraordinary women of New Amazonia, in a season of festival, betrayal, and disguise, he will find a new ally - and a force beyond any that humans have known....

Starfarers


Vonda N. McIntyre - 1989
    Reissue.

Aristoi


Walter Jon Williams - 1992
    Successful in its efforts to create a glittering interstellar empire, founded on the use of an ultra-advanced computer and bioengineering technology, humankind becomes the prey of its own creation, the Aristoi.

Heart of the Comet


David Brin - 1986
    An odyssey of discovery, from a shattered society through the solar system with a handful of men and women who ride a cold, hurtling ball of ice to the shaky promise of a distant, unknowable future.

Halfway Human


Carolyn Ives Gilman - 1998
    On a far-off world, an asexual class of blands exists to serve their fellow humans, protected and isolated from contact with the rest of the universe. But no bland has ever left its sheltered homeworld--until now. Tedla has been found in an alley light-years away from its planet. And it has just tried to commit suicide. Val, an expert in alien cultures, helps Tedla recuperate and in doing so, uncovers the secret tortured world of the blands.

Killing Gravity


Corey J. White - 2017
    She escaped the MEPHISTO lab where she was raised as a psychic supersoldier, which left her with terrifying capabilities, a fierce sense of independence, a deficit of trust and an experimental pet named Seven. She’s spent her life on the run, but the boogeymen from her past are catching up with her. An encounter with a bounty hunter has left her hanging helpless in a dying spaceship, dependent on the mercy of strangers.Penned in on all sides, Mariam chases rumors to find the one who sold her out. To discover the truth and defeat her pursuers, she’ll have to stare into the abyss and find the secrets of her past, her future, and her terrifying potential.

The Man Who Folded Himself


David Gerrold - 1973
    When Daniel Eakins inherits a time machine, he soon realizes that he has enormous power to shape the course of history. He can foil terrorists, prevent assassinations, or just make some fast money at the racetrack. And if he doesn't like the results of the change, he can simply go back in time and talk himself out of making it! But Dan soon finds that there are limits to his powers and forces beyond his control.

To Be Taught, If Fortunate


Becky Chambers - 2019
    Ariadne is one such explorer. As an astronaut on an extrasolar research vessel, she and her fellow crewmates sleep between worlds and wake up each time with different features. Her experience is one of fluid body and stable mind and of a unique perspective on the passage of time. Back on Earth, society changes dramatically from decade to decade, as it always does.Ariadne may awaken to find that support for space exploration back home has waned, or that her country of birth no longer exists, or that a cult has arisen around their cosmic findings, only to dissolve once more by the next waking. But the moods of Earth have little bearing on their mission: to explore, to study, and to send their learnings home. Carrying all the trademarks of her other beloved works, including brilliant writing, fantastic world-building and exceptional, diverse characters, Becky's first audiobook outside of the Wayfarers series is sure to capture the imagination of listeners all over the world.

Gods, Monsters, and the Lucky Peach


Kelly Robson - 2018
    Minh is part of the generation that first moved back up to the surface of the Earth from the underground hells, to reclaim humanity's ancestral habitat. She's spent her entire life restoring river ecosystems, but lately the kind of long-term restoration projects Minh works on have been stalled due to the invention of time travel. When she gets the opportunity take a team to 2000 BC to survey the Tigris and Euphrates rivers, she jumps at the chance to uncover the secrets of the shadowy think tank that controls time travel technology.

Shadow Man


Melissa Scott - 1995
    Except on Hara--there everyone must choose to be a man or a woman and that decision is final. Warreven, a Haran man, could have married the son of the ruler of the planet--if he had chosen to be a woman. The result of the conflict is one of the most bizarre identity crises in science fiction.

China Mountain Zhang


Maureen F. McHugh - 1992
    McHugh established herself as one of the decade's best science fiction writers. In its pages, we enter a post-revolution America, moving from the hyper-urbanized eastern seaboard to the Arctic bleakness of Baffin Island; from the new Imperial City to an agricultural commune on Mars. The overlapping lives of cyber-kite fliers, lonely colonists, illicit neural-pressball players, and organic engineers blend into a powerful, taut story of a young man's journey of discovery. This is a macroscopic world of microscopic intensity, one of the most brilliant visions of modern SF.

The Water That Falls on You from Nowhere


John Chu - 2013
    This makes life difficult for Matt as he maneuvers the marriage question with his lover and how best to "come out" to his traditional Chinese parents.This story is also included in Some of the Best From Tor.com, 2013 Edition: A Tor.Com Original

Ammonite


Nicola Griffith - 1992
    These are the only options available on the planet Jeep. Centuries earlier, a deadly virus shattered the original colony, killing the men and forever altering the few surviving women. Now, generations after the colony has lost touch with the rest of humanity, a company arrives to exploit Jeep–and its forces find themselves fighting for their lives. Terrified of spreading the virus, the company abandons its employees, leaving them afraid and isolated from the natives. In the face of this crisis, anthropologist Marghe Taishan arrives to test a new vaccine. As she risks death to uncover the women’s biological secret, she finds that she, too, is changing–and realizes that not only has she found a home on Jeep, but that she alone carries the seeds of its destruction. . . . Ammonite is an unforgettable novel that questions the very meanings of gender and humanity. As readers share in Marghe’s journey through an alien world, they too embark on a parallel journey of fascinating self-exploration.

Trouble on Triton: An Ambiguous Heterotopia


Samuel R. Delany - 1976
    Delany's 1976 SF novel, originally published as Triton, takes us on a tour of a utopian society at war with . . . our own Earth! High wit in this future comedy of manners allows Delany to question gender roles and sexual expectations at a level that, 20 years after it was written, still make it a coruscating portrait of the happily reasonable man, Bron Helstrom -- an immigrant to the embattled world of Triton, whose troubles become more and more complex, till there is nothing left for him to do but become a woman. Against a background of high adventure, this minuet of a novel dances from the farthest limits of the solar system to Earth's own Outer Mongolia. Alternately funny and moving, it is a wide-ranging tale in which character after character turns out not to be what he -- or she -- seems.