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Children of Memory

Children of Time: Book 3

Adrian Tchaikovsky

The modern classic of space opera that began with Children of Time continues in this extraordinary novel of humanity's battle for survival on a terraformed planet.

Earth failed. In a desperate bid to escape, the spaceship Enkidu and its captain, Heorest Holt, carried its precious human cargo to a potential new paradise. Generations later, this fragile colony has managed to survive, eking out a hardy existence. Yet life is tough, and much technological knowledge has been lost.

Then strangers appear. They possess unparalleled knowledge and thrilling technology -- and they've arrived from another world to help humanity's colonies. But not all is as it seems, and the price of the strangers' help may be the colony itself.

Children of Time

Children of Time: Book 1

Adrian Tchaikovsky

WHO WILL INHERIT THIS NEW EARTH?

The last remnants of the human race left a dying Earth, desperate to find a new home among the stars. Following in the footsteps of their ancestors, they discover the greatest treasure of the past age - a world terraformed and prepared for human life.

But all is not right in this new Eden. In the long years since the planet was abandoned, the work of its architects has borne disastrous fruit. The planet is not waiting for them, pristine and unoccupied. New masters have turned it from a refuge into mankind's worst nightmare.

Now two civilizations are on a collision course, both testing the boundaries of what they will do to survive. As the fate of humanity hangs in the balance, who are the true heirs of this new Earth?

Rejoice: A Knife to the Heart

Steven Erikson

An alien AI has been sent to the solar system as representative of three advanced species. Its mission is to save the Earth's ecosystem - and the biggest threat to that is humanity. But we are also part of the system, so the AI must make a choice. Should it save mankind or wipe it out? Are we worth it?

The AI is all-powerful, and might as well be a god. So it sets up some conditions. Violence is now impossible. Large-scale destruction of natural resources is impossible. Food and water will be provided for those who really, truly need them. You can't even bully someone on the internet any more. The old way of doing things is gone. But a certain thin-skinned US president, among others, is still wedded to late-stage capitalism. Can we adapt? Can we prove ourselves worthy? And are we prepared to give up free will for a world without violence?

And above it all, on a hidden spaceship, one woman watches. A science fiction writer, she was abducted from the middle of the street in broad daylight. She is the only person the AI will talk to. And she must make a decision.

Regenesis

Alliance-Union: Unionside: Book 3

C. J. Cherryh

The direct sequel to the Hugo Award- winning novel Cyteen, Regenesis continues the story of Ariane Emory PR, the genetic clone of one of the greatest scientists humanity has ever produced, and of her search for the murderer of her progenitor-the original Ariane Emory.

Murder, politics, deception, and genetic and psychological manipulation combine against a backdrop of interstellar human societies at odds to create a mesmerizing and major work in Regenesis. Who did kill the original Ariane Emory? And can her personal replicate avoid the same fate?

Those questions have remained unanswered for two decades-since the publication of Cyteen. Now in Regenesis those questions will finally be answered.

Green Mars

Mars Trilogy: Book 2

Kim Stanley Robinson

Winner of the Hugo Award for Best Novel

Kim Stanley Robinson's classic trilogy depicting the colonization of Mars continues in a thrilling and timeless novel that pits the settlers against their greatest foes: themselves.

Nearly a generation has passed since the first pioneers landed on Mars, and its transformation to an Earthlike planet is under way. But not everyone wants to see the process through. The methods are opposed by those who are determined to preserve their home planet's hostile, barren beauty. Led by the first generation of children born on Mars, these rebels are soon joined by a handful of the original settlers. Against this cosmic backdrop, passions, partnerships, and rivalries explode in a story as spectacular as the planet itself.

Tuf Voyaging

Thousand Worlds: Haviland Tuf

George R. R. Martin

Haviland Tuf is an honest space-trader who likes cats. So how is it that, in competition with the worst villains the universe has to offer, he's become the proud owner of a seedship, the last remnant of Earth's legendary Ecological Engineering Corps? Never mind; just be thankful that the most powerful weapon in human space is in good hands--hands which now have the godlike ability to control the genetic material of thousands of outlandish creatures.

Armed with this unique equipment, Tuf is set to tackle the problems that human settlers have created in colonizing far-flung worlds: hosts of hostile monsters, a population hooked on procreation, a dictator who unleashes plagues to get his own way... and in every case, the only thing that stands between the colonists and disaster is Tuf's ingenuity--and his reputation as a man of integrity in a universe of rogues.

Blue Mars

Mars Trilogy: Book 3

Kim Stanley Robinson

The red planet is red no longer, as Mars has become a perfectly inhabitable world. But while Mars flourishes, Earth is threatened by overpopulation and ecological disaster. Soon people look to Mars as a refuge, initiating a possible interplanetary conflict, as well as political strife between the Reds, who wish to preserve the planet in its desert state, and the Green "terraformers". The ultimate fate of Earth, as well as the possibility of new explorations into the solar system, stand in the balance.

Red Mars

Mars Trilogy: Book 1

Kim Stanley Robinson

For eons, sandstorms have swept the barren desolate landscape of the red planet. For centuries, Mars has beckoned to mankind to come and conquer its hostile climate. Now, in the year 2026, a group of one hundred colonists is about to fulfill that destiny.

John Boone, Maya Toitavna, Frank Chalmers, and Arkady Bogdanov lead a mission whose ultimate goal is the terraforming of Mars. For some, Mars will become a passion driving them to daring acts of courage and madness; for others it offers and opportunity to strip the planet of its riches. And for the genetic "alchemists, " Mars presents a chance to create a biomedical miracle, a breakthrough that could change all we know about life... and death.

The colonists place giant satellite mirrors in Martian orbit to reflect light to the planets surface. Black dust sprinkled on the polar caps will capture warmth and melt the ice. And massive tunnels, kilometers in depth, will be drilled into the Martian mantle to create stupendous vents of hot gases. Against this backdrop of epic upheaval, rivalries, loves, and friendships will form and fall to pieces--for there are those who will fight to the death to prevent Mars from ever being changed.

The Terraformers

Annalee Newitz

Destry's life is dedicated to terraforming Sask-E. As part of the Environmental Rescue Team, she cares for the planet and its burgeoning eco-systems as her parents and their parents did before her.

But the bright, clean future they're building comes under threat when Destry discovers a city full of people that shouldn't exist, hidden inside a massive volcano.

As she uncovers more about their past, Destry begins to question the mission she's devoted her life to, and must make a choice that will reverberate through Sask-E's future for generations to come.

The Fifth Head of Cerberus

Gene Wolfe

Back in print for the first time in more than a decade, Gene Wolfe's The Fifth Head of Cerberus is a universally acknowledged masterpiece of science fiction by one of the field's most brilliant writers.

Far out from Earth, two sister planets, Saint Anne and Saint Croix, circle each other in an eternal dance. It is said a race of shapeshifters once lived here, only to perish when men came. But one man believes they can still be found, somewhere in the back of the beyond.

In The Fifth Head of Cerberus, Wolfe skillfully interweaves three bizarre tales to create a mesmerizing pattern: the harrowing account of the son of a mad genius who discovers his hideous heritage; a young man's mythic dreamquest for his darker half; the bizarre chronicle of a scientists' nightmarish imprisonment. Like an intricate, braided knot, the pattern at last unfolds to reveal astonishing truths about this strange and savage alien landscape.

Desolation Road

Desolation Road: Book 1

Ian McDonald

It all began 30 years ago on Mars, with a greenperson, but by the time it all finished, the town of Desolation Road had experienced every concievable abnormality from Adam Black's Wonderful Travelling Chataqua to the Astounding Tatterdemalion Air Bazaar.

Ringworld

Known Space: Ringworld: Book 1

Larry Niven

Pierson's puppeteers, strange, three-legged, two-headed aliens, have discovered an immense structure in a hitherto unexplored part of the universe. Frightened of meeting the builders of such a structure, the puppeteers set about assembling a team consisting of two humans, a puppeteer and a kzin, an alien not unlike an eight-foot-tall, red-furred cat, to explore it. The artefact is a vast circular ribbon of matter, some 180 million miles across, with a sun at its centre - the Ringworld. But the expedition goes disastrously wrong when the ship crashlands and its motley crew faces a trek across thousands of miles of the Ringworld's surface.

God's War

Bel Dame Apocrypha: Book 1

Kameron Hurley

Nyx had already been to hell. One prayer more or less wouldn t make any difference...

On a ravaged, contaminated world, a centuries-old holy war rages, fought by a bloody mix of mercenaries, magicians, and conscripted soldiers. Though the origins of the war are shady and complex, there's one thing everybody agrees on--

There's not a chance in hell of ending it.

Nyx is a former government assassin who makes a living cutting off heads for cash. But when a dubious deal between her government and an alien gene pirate goes bad, Nyx's ugly past makes her the top pick for a covert recovery. The head they want her to bring home could end the war--but at what price?

The world is about to find out.

Dark Benediction

Walter M. Miller, Jr.

Originally published in 1980 as The Best of Walter M. Miller, then republished in 2000 as Dark Benediction.

Walter M. Miller, Jr. is best remembered as the author of A Canticle for Leibowitz, universally recognized as one of the greatest novels of modern SF. But as well as writing that deeply felt and eloquent book, he produced many shorter works of fiction of stunning originality and power.

His profound interest in religion and his innate literary gifts combined in the production of such works as "The Darfstellar", for which he won a Hugo in 1955, "Conditionally Human", "I, Dreamer" and "The Big Hunger", all of which are included in this brilliant and essential collection.

Table of Contents:

  • You Triflin' Skunk! - (1965) - shortstory
  • The Will - (1954) - shortstory
  • Anybody Else Like Me? - (1952) - novelette
  • Crucifixus Etiam - (1953) - shortstory
  • I, Dreamer - (1953) - shortstory
  • Dumb Waiter - (1952) - novelette
  • Blood Bank - (1952) - novella
  • Big Joe and the Nth Generation - (1952) - shortstory
  • The Big Hunger - (1952) - shortstory
  • Conditionally Human - (1952) - novella
  • The Darfsteller - (1955) - novella
  • Dark Benediction - (1951) - novella
  • The Lineman - (1957) - novella
  • Vengeance for Nikolai - (1957) - novelette

The Blue World

Jack Vance

King Kragen has ruled a sea-covered world since human colonists arrived twelve generations before. A monstrous water creature with gluttonous appetites, King Kragen demands a payoff in return for protection- and to appease him has become a way of life. To anger King Kragen means certain death, but Sklar Hast is fed up with slavery and sacrifice. In a world without weapons, the fight won't be easy--particularly when the unwilling treat Sklar Hast as the enemy!

Dying of the Light

Thousand Worlds

George R. R. Martin

A whisperjewel summoned him to Worlorn, and a love he thought he'd lost. But Worlorn isn't the world Dirk t'Larien 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, forever falling toward night. Amid this bleak landscape is a violent clash of cultures in which there is no code of honor - and the hunter and the hunted are often interchangeable.

Caught up in a dangerous triangle, Gwen is in need of Dirk's protection, and he will do anything to keep her safe, even if it means challenging the barbaric man who has claimed her - and his cunning cohort. But an impenetrable veil of secrecy surrounds them all, and it's becoming impossible for Dirk to distinguish between his allies and his enemies. While each will fight to stay alive, one is waiting for escape, one for revenge, and another for a brutal, untimely demise.

Farmer in the Sky

Heinlein Juveniles: Book 4

Robert A. Heinlein

The Earth is crowded and food is rationed, but a colony on Ganymede, one of the moons of Jupiter, offers an escape for teenager Bill Lermer and his family. Back on Earth, the move sounded like a grand adventure, but Bill soon realizes that life on the frontier is dangerous, and in an alien world with no safety nets, nature is cruelly unforgiving of even small mistakes.

Bill's new home is a world of unearthly wonders and heartbreaking tragedy. He will face hardships, survive dangers, and grow up fast, meeting the challenge of opening up a new world for humanity and finding strengths within himself that he had never suspected existed.

Seed

Rob Ziegler

It's the dawn of the 22nd century, and the world has fallen apart. Decades of war and resource depletion have toppled governments. The ecosystem has collapsed. A new dust bowl sweeps the American West. The United States has become a nation of migrants -starving masses of nomads who seek out a living in desert wastelands and encampments outside government seed-distribution warehouses.

In this new world, there is a new power. Satori is more than just a corporation, she is an intelligent, living city that grew out of the ruins of Denver. Satori bioengineers both the climate-resistant seed that feeds a hungry nation, and her own post-human genetic Designers, Advocates, and Laborers. What remains of the United States government now exists solely to distribute Satori seed; a defeated American military doles out bar-coded, single-use Satori seed to the nation's starving citizens.

When one of Satori's Designers goes rogue, Agent Sienna Doss-Ex-Army Ranger turned glorified bodyguard-is tasked by the government to bring her in: The government wants to use the Designer to break Satori's stranglehold on seed production and reassert themselves as the center of power. Sianna Doss's search for the Designer intersects with Brood and his younger brother Pollo - orphans scrapping by on the fringes of the wastelands. Pollo is abducted, because he is believed to suffer from Tet, a newly emergent disease, the victims of which are harvested by Satori.

As events spin out of control, Brood and Sienna Doss find themselves at the heart of Satori, where an explosive climax promises to reshape the future of the world.

After the Fall, Before the Fall, During the Fall

Nancy Kress

Hugo-nominated and Nebula-winning Novella

The year is 2035. After ecological disasters nearly destroyed the Earth, 26 survivors-the last of humanity-are trapped by an alien race in a sterile enclosure known as the Shell. Fifteen-year-old Pete is one of the Six-children who were born deformed or sterile and raised in the Shell. As, one by one, the survivors grow sick and die, Pete and the Six struggle to put aside their anger at the alien Tesslies in order to find the means to rebuild the earth together. Their only hope lies within brief time-portals into the recent past, where they bring back children to replenish their disappearing gene pool.

Meanwhile, in 2013, brilliant mathematician Julie Kahn works with the FBI to solve a series of inexplicable kidnappings. Suddenly her predictive algorithms begin to reveal more than just criminal activity. As she begins to realize her role in the impending catastrophe, simultaneously affecting the Earth and the Shell, Julie closes in on the truth. She and Pete are converging in time upon the future of humanity-a future which might never unfold. Weaving three consecutive time lines to unravel both the mystery of the Earth's destruction and the key to its salvation, this taut adventure offers a topical message with a satisfying twist.

2312

Kim Stanley Robinson

The year is 2312. Scientific and technological advances have opened gateways to an extraordinary future. Earth is no longer humanity's only home; new habitats have been created throughout the solar system on moons, planets, and in between. But in this year, 2312, a sequence of events will force humanity to confront its past, its present, and its future.

The first event takes place on Mercury, on the city of Terminator, itself a miracle of engineering on an unprecedented scale. It is an unexpected death, but one that might have been foreseen. For Swan Er Hong, it is an event that will change her life. Swan was once a woman who designed worlds. Now she will be led into a plot to destroy them.

The Escape Orbit

James White

A captured human officer leads his fellows in an escape from an alien-dominated prison planet.

A Matter for Men

War Against the Chtorr: Book 1

David Gerrold

With the human population ravaged by a series of devastating plagues, the alien Chtorr arrive to begin the final phase of their invasion. Even as many on Earth deny their existence, the giant wormlike carnivores prepare the world for the ultimate violation--the enslavement of humanity for food!

Inhuman Garbage

Retrieval Artist

Kristine Kathryn Rusch

Finalist in Asimov's 30th Annual Readers' Award Poll; selected for three 2015 Year's Best anthologies

This novella is set in the Retrieval Artist universe, as part of the background for the Anniversary Day saga.

Detective Noelle DeRicci is called in when the body of a woman is discovered in a waste crate in Armstrong, the largest dome on the Moon -- found by the owner just before the crate's contents were sent to the Growing Pits to be made into compost. The coroner she has summoned identifies the body as the nanny to the child of a local crime boss named Luc Deshin, who subsequently tells DeRicci he had fired the victim that day because she was not affectionate enough with his infant son.

Originally published in Asimov's Science Fiction, March 2015. The story can also be found in the anthologies The Year's Best Science Fiction: Thirty-Third Annual Collection (2016), edited by Gardner Dozois, and The Year's Best Science Fiction & Fantasy Novellas 2016, edited by Paula Guran.

Read this story online for free at Asimov's Science Fiction.

Icehenge

Kim Stanley Robinson

On the North Pole of Pluto there stands an enigma: a huge circle of standing blocks of ice, built on the pattern of Earth's Stonehenge--but ten times the size, standing alone at the farthest reaches of the Solar System. What is it? Who came there to build it?

In Kim Stanley Robinson's Icehenge,the secret lies, perhaps, in the chaotic decades of the Martian Revolution, in the lost memories of those who have lived for centuries.

Vagabonds

Hao Jingfang

A century after the Martian war of independence, a group of kids are sent to Earth as delegates from Mars, but when they return home, they are caught between the two worlds, unable to reconcile the beauty and culture of Mars with their experiences on Earth.

This genre-bending novel is set on Earth in the wake of a second civil war... not between two factions in one nation, but two factions in one solar system: Mars and Earth. In an attempt to repair increasing tensions, the colonies of Mars send a group of young people to live on Earth to help reconcile humanity. But the group finds itself with no real home, no friends, and fractured allegiances as they struggle to find a sense of community and identity, trapped between two worlds.

Red Planet

Heinlein Juveniles: Book 3

Robert A. Heinlein

"The most thrilling and tingling kind of science fiction story."--Kirkus Reviews

"Heinlein found his true direction.... The Martian setting is logically constructed and rich in convincing detail [while] the characters are engaging and the action develops naturally."--Jack Williamson

Marking the first appearance of the Martian elder race that played such a prominent role in Stranger in a Strange Land, Robert A. Heinlein's iconic Red Planet tells the story of Jim Marlowe and Frank Sutton's journey to the Lowe Academy boarding school on Mars, and the discoveries they make there that could impact the future of their entire colony.

While on their way to the prestigious school, Jim and Frank, along with Jim's volleyball-sized native pet, Willis the Bouncer, meets one of the sentient Martians, Gekko, when they wander into forbidden territory. Joining in a ritual called "growing together" and sharing water with the three-legged Martian, making them "water friends," the boy's eyes are opened to the wonders of the planet they call home and are curious about how protective the Martians are over Willis, who chooses to stay with Jim, despite the gentle urgings of the larger aliens.

Finally enrolled in school, Jim's independent nature and impulsive tendency to speak his mind gets him into trouble with the authoritarian headmaster, Mr. Howe, who confiscates Willis, claiming it is against school rules to have pets. When the boys go to rescue him, they get more than they are bargained for when the little Bouncer's eidetic memory for sounds--which he can accurately reproduce like a recording--reveals the colonial administrator of Mars' nefarious plan for the colony, which he overheard during his confinement.

The implications of this newfound knowledge, as well as their need to protect Willis from the unscrupulous Mr. Howe, prompt the boys to run away from school, to warn their parents and the rest of their colony. What they encounter along the way not only has them questioning everything they know, about Willis and the mysterious Martian race, but the ramifications of their actions are more profound in this edition of Red Planet, which has restored the ending Robert A. Heinlein had originally intended to be published.

The Secret of Life

Paul J. McAuley

2026: Something is growing in the Pacific Ocean, a strange fungus-like organism that may threaten our entire food chain. Christened "the slick," the bizarre phenomenon is quickly the subject of intense, top-secret analysis-which rapidly reveals that it contains DNA unlike that of any other life on the planet.

Where is it from? A Chinese mission to Mars is rumored to have discovered life beneath the Martian icecap, but the Chinese aren't talking. Dr. Mariella Anders is recruited by NASA to join an urgent mission to the Red Planet to find out. Brilliant and committed to science, Mariella wants only the truth, but others' motives are less noble. Faced with corporations, activist groups, and superpowers, each with their own secret agendas, Mariella is on a perilous quest for knowledge... and she's about the discover the high price of truth.

The Martians

Mars Trilogy

Kim Stanley Robinson

A glorious companion volume to Robinson's world-wide bestselling trilogy.

All Colours Mars

Red Mars. Green Mars. Blue Mars...

The Mars trilogy has rapidly assumed the status of modern science fiction classic, capturing the imagination of hundreds of thousands of readers around the world. Now, with The Martians, comes Kim Stanley Robinson essential companion to the Mars series. New novellas and short stories head the collection, featuring many of the trilogy's central characters in events previously only hinted at in the novels. Added to this are works on Martian mythology, poetry, character histories, alternative scenarios to the events that actually took place in the trilogy and finally various pieces which the author omitted in the final edit.

In short, The Martians is a unique collection of previously unpublished fiction, a fascinating addition to Robinson's oeuvre, and a must for all lovers of the red planet.

Contents:

  • Michel in Antarctica
  • Exploring Fossil Canyon
  • The Archaea Plot
  • The Way the Land Spoke to Us
    • The Great Escarpment
    • Flatness
  • Maya and Desmond
  • Four Teleological Trails
    • Wrong way
    • Mistakes can be good
    • You can't lose the trail
    • The natural genius
  • Coyote Makes Trouble
  • Michel in Provence
  • Green Mars
  • Arthur Sternbach Brings the Curveball to Mars
  • Salt and Fresh
  • The Constitution of Mars
  • Some Worknotes and Commentary on the Constitution, by Charlotte Dorsa Brevia
  • Jackie on Zo
  • Keeping the Flame
  • Saving Noctis Dam
  • Big Man in Love
  • An Argument for the Deployment of All Safe Terraforming Technologies
  • Selected Abstracts from The Journal of Areological Studies, vols. 56-64
  • Odessa
  • Sexual Dimorphism
  • Enough Is as Good as a Feast
  • What Matters
  • Coyote Remembers
  • Sax Moments
  • A Martian Romance
  • If Wang Wei Lived on Mars and other poems
    • Visiting
    • After a Move
    • Canyon Colour
    • Vastitas Borealis
    • Night Song
    • Desolation
    • The Names of the Canals
    • Another Night Song
    • Six Thoughts on the Uses of Art
      • What's in My Pocket
      • In the Finale of Beethoven's Ninth
      • Reading Emerson's Journal
      • The Walkman
      • Dreams Are Real
      • Seen While Running
    • Crossing Mather Pass
    • Night in the Mountains
      • Camp
      • The Ground
      • Writing by Starlight
    • Invisible Owls
    • Tenzing
    • The Soundtrack
    • A Report on the First Reported Case of Areophagy
    • The Reds' Lament
    • Two Years
    • I Say Goodbye to Mars
  • Purple Mars

Proxima

Proxima: Book 1

Stephen Baxter

The very far future: The Galaxy is a drifting wreck of black holes, neutron stars, chill white dwarfs. 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 - and (in this fiction), the nearest to host a world, Proxima IV, habitable by humans. But Proxima IV is unlike Earth in many ways. Huddling close to the warmth, orbiting in weeks, it keeps one face to its parent star at all times. The 'substellar point', with the star forever overhead, is a blasted desert, and the 'antistellar point' on the far side is under an ice cap in perpetual darkness. How would it be to live on such a world? Needle ships fall from Proxima IV's sky. Yuri Jones, with 1000 others, is about to find out...P ROXIMA tells the amazing tale of how we colonise a harsh new eden, and the secret we find there that will change our role in the Universe for ever.

Fury

Keeps: Book 2

Henry Kuttner

The Earth is long dead, blasted apart, and the human survivors who settled on Venus live in huge citadels beneath the Venusian seas in an atrophying, class-ridden society ruled by the Immortals - genetic mutations who live a thousand years or more. Sam Reed was born an immortal, born to rule those with a normal life-span, but his deranged father had him mutilated as a baby so that he wouldn't know of his heritage. And Sam grew up on the wrong side of the tracks and the law, thinking of the Immortals as his enemies. Then he reached the age of eighty, understood what had happened to him and went looking for revenge - and changed his decaying world forever.

Lockstep

Lockstep: Book 1

Karl Schroeder

When seventeen-year-old Toby McGonigal finds himself lost in space, separated from his family, he expects his next drift into cold sleep to be his last. After all, the planet he's orbiting is frozen and sunless, and the cities are dead. But when Toby wakes again, he's surprised to discover a thriving planet, a strange and prosperous galaxy, and something stranger still - that he's been asleep for 14,000 years.

Welcome to the Lockstep Empire, where civilization is kept alive by careful hibernation. Here cold sleeps can last decades and waking moments mere weeks. Its citizens survive for millenia, traveling asleep on long voyages between worlds. Not only is Lockstep the new center of the galaxy, but Toby is shocked to learn that the Empire is still ruled by its founding family: his own.

Toby's brother Peter has become a terrible tyrant. Suspicious of the return of his long-lost brother, whose rightful inheritance also controls the lockstep hibernation cycles, Peter sees Toby as a threat to his regime. Now, with the help of a lockstep girl named Corva, Toby must survive the forces of this new Empire, outwit his siblings, and save human civilization.

Terraforming Earth

Jack Williamson

When a giant meteor crashes into the earth and destroys all life, the small group of human survivors manage to leave the barren planet and establish a new home on the moon. From Tycho Base, men and woman are able to observe the devastated planet and wait for a time when return will become possible.

Generations pass. Cloned children have had children of their own, and their eyes are raised toward the giant planet in the sky which long ago was the cradle of humanity. Finally, after millennia of waiting, the descendants of the original refugees travel back to a planet they've never known, to try and rebuild a civilization of which they've never been a part.

The fate of the earth lies in the success of their return, but after so much time, the question is not whether they can rebuild an old destroyed home, but whether they can learn to inhabit an alien new world--Earth.