Strange fireballs race through the sky above the deepest trenches of the oceans. Something is about to show itself, something terrible and alien, a force capable of causing global catastrophe.

    The title is a play on words, one meaning "the force which pulls" & the other being "extremely serious or important". It was serialized in Astounding Science Fiction, 4–7/53. Its 1st cloth publication was in '54. It was 1st published in paper in '58. Along with the novel itself, many editions (& most recent editions) of the book also include Whirligig World, an essay on creating the planet Mesklin that was published in the 6/53 Astounding. He published two sequels, a '70 novel called Star Light & a '73 short story called Lecture Demonstration. Mission of Gravity was nominated for a Retro Hugo Award for '54.For a profit & adventure Barlennan would sail thousands of miles across uncharted waters, into regions where gravity played strange tricks. He'd dare the perils of strange tribes & stranger creatures--even dicker with those aliens from beyond the skies, though the concept of another world was unknown to the inhabitants of the planet of Mesklin. But in spite of the incredible technology of the strangers & without regard for their enormous size, Barlennan had the notion of turning the deal to an unsuspected advantage for himself--a considerable enterprise for a being very much resembling a 15" caterpillar!

    [Publisher's Note: The Mountains of Mourning was originally published as a stand-alone novella in the May 1989 issue of Analog. It was then included as the first of three novellas that make up the novel Borders of Infinity (October 1989). For the novel, Ms. Bujold added a short "framing story" that tied the three novellas together by setting up each one as a flashback that Miles experiences while recovering from bone-replacement surgery. Fictionwise is publishing these novellas separately, but we decided to leave in Ms. Bujold's short framing story for those who may also wish to read the other two novellas (Labyrinth and The Borders of Infinity).] Locus Poll Award Nominee, Nebula Award Winner, Hugo Award Winner, SF Chronicle Poll Nominee

    On a remote, icy planet, the soldier known as Breq is drawing closer to completing her quest.Once, she was the Justice of Toren - a colossal starship with an artificial intelligence linking thousands of soldiers in the service of the Radch, the empire that conquered the galaxy.Now, an act of treachery has ripped it all away, leaving her with one fragile human body, unanswered questions, and a burning desire for vengeance.

    Mia Havero's Ship is a small closed society. It tests its children by casting them out to live or die in a month of Trial in the hostile wilds of a colony world. Mia Havero's Trial is fast approaching and in the meantime she must learn not only the skills that will keep her alive but the deeper courage to face herself and her world. Published originally in 1968, Alexei Panshin's Nebula Award-winning classic has lost none of its relevance, with its keen exploration of societal stagnation and the resilience of youth.

    He can con humans, aliens and any number of robots time after time. Jim is so slippery that all the inter-galactic cops can do is make him one of their own

    But Worlorn isn’t the world Dirk imagined, and Gwen Delvano is no longer the woman he once knew. She is bound to another man, and to a dying planet that is trapped in twilight. Gwen needs Dirk’s protection, and he will do anything to keep her safe, even if it means challenging the barbaric man who has claimed her. But an impenetrable veil of secrecy surrounds them all, and it’s becoming impossible for Dirk to distinguish between his allies and his enemies. In this dangerous triangle, one is hurtling toward escape, another toward revenge, and the last toward a brutal, untimely demise.

    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.

    Miles Bennell discovered an insidious, horrifying plot. Silently, subtly, almost imperceptibly, alien life-forms were taking over the bodies and minds of his neighbors, his friends, his family, the woman he loved—the world as he knew it. First published in 1955, this classic thriller of the ultimate alien invasion and the triumph of the human spirit over an invisible enemy inspired three major motion pictures.

    Coveted across the known universe, melange is a prize worth killing for...When House Atreides is betrayed, the destruction of Paul’s family will set the boy on a journey toward a destiny greater than he could ever have imagined. And as he evolves into the mysterious man known as Muad’Dib, he will bring to fruition humankind’s most ancient and unattainable dream.***Original, first edition from 1965 can be found here.

    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.

    Each sought his own brand of happiness. But none could have guessed what awaited them. Not even in a million years....

    Now part of the Voyager Classics collection.The Martian Chronicles tells the story of humanity’s repeated attempts to colonize the red planet. The first men were few. Most succumbed to a disease they called the Great Loneliness when they saw their home planet dwindle to the size of a fist. They felt they had never been born. Those few that survived found no welcome on Mars. The shape-changing Martians thought they were native lunatics and duly locked them up.But more rockets arrived from Earth, and more, piercing the hallucinations projected by the Martians. People brought their old prejudices with them – and their desires and fantasies, tainted dreams. These were soon inhabited by the strange native beings, with their caged flowers and birds of flame.Contents:Rocket SummerYllaThe Summer NightThe Earth MenThe TaxpayerThe Third Expedition-And the Moon Be Still As BrightThe SettlersThe Green MorningThe LocustsNight MeetingThe ShoreInterimThe MusiciansWay in the Middle of the AirThe Naming of NamesUsher IIThe Old OnesThe MartianThe Luggage StoreThe Off SeasonThe WatchersThe Silent TownsThe Long YearsThere Will Come Soft RainsThe Million Year Picnic

    Winner of the Nebula Award. Reprint.

    The Intersolar Commonwealth, a sphere of stars some four hundred light-years in diameter, contains more than six hundred worlds, interconnected by a web of transport "tunnels" known as wormholes. At the farthest edge of the Commonwealth, astronomer Dudley Bose observes the impossible: Over one thousand light-years away, a star... vanishes. It does not go supernova. It does not collapse into a black hole. It simply disappears. Since the location is too distant to reach by wormhole, a faster-than-light starship, the Second Chance, is dispatched to learn what has occurred and whether it represents a threat. In command is Wilson Kime, a five-time rejuvenated ex-NASA pilot whose glory days are centuries behind him.Opposed to the mission are the Guardians of Selfhood, a cult that believes the human race is being manipulated by an alien entity they call the Starflyer. Bradley Johansson, leader of the Guardians, warns of sabotage, fearing the Starflyer means to use the starship's mission for its own ends.Pursued by a Commonwealth special agent convinced the Guardians are crazy but dangerous, Johansson flees. But the danger is not averted. Aboard the Second Chance, Kime wonders if his crew has been infiltrated. Soon enough, he will have other worries. A thousand light-years away, something truly incredible is waiting: a deadly discovery whose unleashing will threaten to destroy the Commonwealth... and humanity itself. Could it be that Johansson was right?