From the summit of their distant future, a charismatic renegade named Ganymede travels to the past to bring Galileo forward in an attempt to alter history and ensure the ascendancy of science over religion. And if that means Galileo must be burned at the stake, so be it.From Galileo's heresy trial to the politics of far-future Jupiter, Kim Stanley Robinson illuminates the parallels between a distant past and an even more remote future—in the process celebrating the human spirit and calling into question the convenient truths of our own moment in time.

    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 millennia, 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.Karl Schroeder's Lockstep is a grand innovation in hard SF space opera.

    The Stars My Destination is a classic of technological prophecy and timeless narrative enchantment by an acknowledged master of science fiction.

    Suddenly deadly spores were falling like silver threads from the sky, devouring everything - and everyone - in their path. It began to look as if the colony, cut off from Earth and lacking the resources to combat the menace, was doomed.Then some of the colonists noticed that the small, dragonlike lizards that inhabited their new world were joining the fight against Thread, breathing fire on it and teleporting to safety. If only, they thought, the dragonets were big enough for a human to ride and intelligent enough to work as a team with a rider...And so they set their most talented geneticist to work to create the creatures Pern so desperately needed - Dragons!

    Human colonists serve as world-building crash-test dummies, dropped onto empty planets deemed too dangerous or inconvenient for other races, to pave over whatever marvels and threats evolution had put there. Like so many others, Ramon Espejo ran from the poverty and hopelessness of the Third World to the promise of a new world, joining a host of like-minded workers and dreamers aboard one of the great starships of the mysterious, repulsive Enye. But the life he found on the far-off planet of Sao Paulo was no better than the one he had abandoned.Tough, volatile, and angry, a luckless prospector hoping for that one rich strike that will make him wealthy, Ramon is content only when on his own out in the bush, far from the dirty, loud, bustling hive of humanity that he detests with sociopathic fervor. Then one night his rage and too much alcohol get the better of him, resulting in sudden bloodshed and a high-profile murder.Ramon is forced to flee into the wilderness for however long it will take for the furor to die down. Here, mercifully, almost happily alone, Ramon is once again free. But while searching for his long-elusive lode, he stumbles upon something completely unexpected: a highly advanced alien race in hiding; fugitives like himself on a world not their own.Suddenly in possession of a powerful, dangerous secret, Ramon must battle for his freedom from alien captors and also against the hostile and unpredictable planet. And so the chase begins. Police, fugitive aliens, and a human murderer weave a web of shifting alliances as Ramon enters the greatest manhunt the alien world of Sao Paulo has ever known. If he is to survive, Ramon must overcome inscrutable aliens and deadly predators, but his greatest enemy is himself. With every move in the desperate game, he struggles to outwit his enemies and solve the mystery of a murder he himself committed. A rip-roaring adventure tale and character study of a fascinating and twisted mind, "Hunter's Run" showcases three masters of the form at their best.

    It pushed Earth through the greatest technological evolution ever known, while warning that time travel is forbidden, and transgressors will be eliminated.Distant descendants of this ultra high-tech Earth live in parochial simplicity on the far-flung worlds of the New Republic. Their way of life is threatened by the arrival of an alien information plague known as the Festival. As forbidden technologies are literally dropped from the sky, suppressed political factions descend into revolutionary turmoil.A battle fleet is sent from Earth to destroy the Festival, but Spaceship engineer Martin Springfield and U.N. diplomat Rachel Mansour have been assigned rather different tasks. Their orders are to diffuse the crisis or to sabotage the New Republic's war-fleet, whatever the cost, before the Eschaton takes hostile action on a galactic scale.

    Together this dynamic pair begin their journey through space aided by quotes from The Hitch Hiker's Guide "A towel is about the most massively useful thing an interstellar hitchhiker can have" and a galaxy-full of fellow travellers: Zaphod Beeblebrox - the two-headed, three-armed ex-hippie and totally out to lunch president of the galaxy; Trillian, Zaphod's girlfriend (formally Tricia McMillan), whom Arthur tried to pick up at a cocktail party once upon a time zone; Marvin, a paranoid, brilliant and chronically depressed robot; Veet Voojagig, a former graduate student who is obsessed with the disappearance of all the ball-point pens he has bought over the years.

    The colony ship they arrived on is aflame. The rest of their contingent is dead. They've only received half their training, and they are being asked to conquer an entire planet. Before they can, however, they must first survive each other. In this gritty tale of youths struggling to survive, Hugh Howey fuses the best of young adult fantasy with the piercing social commentary of speculative fiction. The result is a book that begs to be read in a single sitting. An adventurous romp that will leave readers exhausted and begging for more.

    There are many yous. There is not one world. There are many worlds. Ours is one of billions of parallel earths.When Everett Singh's scientist father is kidnapped from the streets of London, he leaves young Everett a mysterious app on his computer. Suddenly, this fourteen-year-old has become the owner of the most valuable object in the multiverse-the Infundibulum-the map of all the parallel earths, and there are dark forces in the Ten Known Worlds who will stop at nothing to get it. They've got power, authority, and the might of ten planets-some of them more technologically advanced than our Earth-at their fingertips. He's got wits, intelligence, and a knack for Indian cooking.To keep the Infundibulum safe, Everett must trick his way through the Heisenberg Gate his dad helped build and go on the run in a parallel Earth. But to rescue his Dad from Charlotte Villiers and the sinister Order, this Planesrunner's going to need friends. Friends like Captain Anastasia Sixsmyth, her adopted daughter Sen, and the crew of the airship Everness.Can they rescue Everett's father and get the Infundibulum to safety? The game is afoot! (For ages 12 & up)

    Among the survivors are eighteen-year-old Nico and her dog, on a voyage devised by Nico's father to find a mythical portal; a young artist named Kit, raised in an old abandoned cinema; and the enigmatic Deliverer, who lives Life after Life in an attempt to put the world back together. As swarms of infected Flies roam the earth, these few survivors navigate the woods of post-apocalyptic New England, meeting others along the way, each on their own quest to find life and love in a world gone dark. The Electric Kingdom is a sweeping exploration of art, storytelling, eternal life, and above all, a testament to the notion that even in an exterminated world, one person might find beauty in another.

    Destroyer of Worlds. Conqueror of Other Worlds. Mad Genius. Ex-Warlord of Earth.Not bad for a guy without a spine.But what's a villain to do after he's done . . . everything. With no new ambitions, he's happy to pitch in and solve the energy crisis or repel alien invaders should the need arise, but if he had his way, he'd prefer to be left alone to explore the boundaries of dangerous science. Just as a hobby, of course.Retirement isn't easy though. If the boredom doesn't get him, there's always the Venusians. Or the Saturnites. Or the Mercurials. Or . . . well, you get the idea. If that wasn't bad enough, there's also the assassins of a legendary death cult and an up-and-coming megalomaniac (as brilliant as he is bodiless) who have marked Emperor for their own nefarious purposes. But Mollusk isn't about to let the Earth slip out of his own tentacles and into the less capable clutches of another. So it's time to dust off the old death ray and come out of retirement. Except this time, he's not out to rule the world. He's out to save it from the peril of THE SINISTER BRAIN!

    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...

    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.

    In the twenty-third century pioneers have escaped the crowded earth for life in self-sustaining orbital colonies.  One of the colonies, Rotor, has broken away from the solar system to create its own renegade utopia around an unknown red star two light-years from Earth:  a star named Nemesis.  Now a fifteen-year-old Rotorian girl has learned of the dire threat that nemesis poses to Earth's people--but she is prevented from warning them.  Soon she will realize that Nemesis endangers Rotor as well.  And so it will be up to her alone to save both Earth and Rotor as--drawn inexorably by Nemesis, the death star--they hurtle toward certain disaster.

    The colonies are linked together by the occasional sublight colony ship voyages and hyperspatial data-casting. Human consciousness is digitally freighted between the stars and downloaded into bodies as a matter of course.But some things never change. So when ex-envoy, now-convict Takeshi Kovacs has his consciousness and skills downloaded into the body of a nicotine-addicted ex-thug and presented with a catch-22 offer, he really shouldn't be surprised. Contracted by a billionaire to discover who murdered his last body, Kovacs is drawn into a terrifying conspiracy that stretches across known space and to the very top of society.