And, as they charge headlong into the galaxy, humans discover other worlds that are already there.

    An alien migration fleet -- 14,000 starships strong -- searches the stars for a new home, its homeworld forever lost. When they finally find planets that can support them, all they have to do is eradicate the pesky human natives, a task they assume is easily within their powers. But Earth's Commonwealth of Worlds isn't about to give up so easily -- even if it has to create and train something it hasn't had for centuries: soldiers!

    So when both men are stranded on far-off planets with no hope of rescue from Earth, they must rely on their wits and their training to survive. But survival is only the beginning. To better handle the rigors of the alien world of Topaz, Fox and his crewmates have been implanted with the memories of their Apache ancestors -- but the Opposition has sent its own team with the reawakened memories of their Mongol ancestors! Meanwhile, Murdock is trapped in the ancient past of the water world of Hawaika, facing terrifying wizards in a kingdom he knows will soon be utterly annihilated by an alien empire that is bent on the conquest of the entire galaxy. The fates of two worlds, and possibly the galaxy itself, will be determined by the actions of these castaways in time -- and whatever happens, the lives of Time Agents everywhere will be changed forever....

    And when Karl Woodward's starship The Mountain found a lost colony, a stranded criminal mob struck, determined to seize his ship.

    R. Martin, author of A Game of ThronesIt's spring on Nantucket and everything is perfectly normal, until a sudden storm blankets the entire island. When the weather clears, the island's inhabitants find that they are no longer in the late twentieth century...but have been transported instead to the Bronze Age! Now they must learn to survive with suspicious, warlike peoples they can barely understand and deal with impending disaster, in the shape of a would-be conqueror from their own time.

    Neal Anson Clemons, brilliant physicist and martial arts expert, was born at the very moment that men first landed on the moon, and his dream had always been to find a way to travel to the stars. And now he and his team have achieved a breakthrough, both in building a warp drive, and finding a new energy source powerful enough to make the drive more than an interesting theoretical concept. With the help of a beautiful Air Force Major and astronaut, Tabitha Ames, the US Government has funded the project, including assembly in orbit of the first faster-than-light probe. Unfortunately, forces working behind the scenes have much darker dreams, and they do not hesitate to blow up a space shuttle, attempt to kill Neal and Tabitha, and use the stolen warp technology to start what they expect to be a short victorious war with the United States. But Neal has ideas for using warp drive completely unsuspected by America's enemies, and repelling the all-out attack is only the beginning of a titanic struggle to reach the stars.

    Suddenly the planet and every living thing on it no longer exist in a single timeline. Instead, the world becomes a patchwork of eras, from prehistory to 2037, each with its own indigenous inhabitants.Scattered across the planet are floating silver orbs impervious to all weapons and impossible to communicate with. Are these technologically advanced devices responsible for creating and sustaining the rifts in time? Are they cameras through which inscrutable alien eyes are watching? Or are they something stranger and more terrifying still?The answer may lie in the ancient city of Babylon, where two groups of refugees from 2037: three cosmonauts returning to Earth from the International Space Station, and three United Nations peacekeepers on a mission in Afghanistan have detected radio signals: the only such signals on the planet, apart from their own. The peacekeepers find allies in nineteenth-century British troops and in the armies of Alexander the Great. The astronauts, crash-landed in the steppes of Asia, join forces with the Mongol horde led by Genghis Khan. The two sides set out for Babylon, each determined to win the race for knowledge . . . and the power that lies within.Yet the real power is beyond human control, perhaps even human understanding. As two great armies face off before the gates of Babylon, it watches, waiting. . . .

    But first they'll have to overcome some very unusual residents of the hills and valleys. One is David Drake's unforgettable creation, Old Nathan the Wizard. He doesn't claim much for his magical powers, but they're real enough for what they are-and besides, he hasn't forgotten how to use his long flintlock rifle. Enter the gritty, realistic world of Old Nathan, a backwoodsman who talks to animals and says he'll face the Devil himself-and who in the end will have to face the Devil in very fact. A century later, very different interlopers, from criminals to snooping college professors, are poking around the hills, up to no good. But a very unusual family, the Hogbens, are likely to cause more trouble than unwelcome visitors can handle, as Henry Kuttner relates. They're a family of mutants, with very unusual powers, and city folk who cause trouble are likely to suddenly find unbelievable-and unpleasant-things happening to them. But not all of the trouble is caused by humans, as the Slade family find out when Eric Flint and Ryk E. Spoor relate how a Kentucky family finds itself caught in the middle of a struggle between battling groups of the creatures who live deep underground and are the basis from the old legends of gnomes. The Slades have to make sure that the right gnomes win-or an earthquake will wipe out everyone in at least four states. Magic, mutants, and mountain folk add up to an unusual volume, with adventure ranging from the grim and eerie to the wildly comic.

    But the journey has a terrible cost. It alters not only the future but the "present" in which we live.A century after the publication of H. G. Wells' immortal The Time Machine, Stephen Baxter, today's most acclaimed new "hard SF" author, and the acknowledged Clarke, returns to the distant conflict between the Eloi and the Morlocks in a story that is at once an exciting expansion, and a radical departure based on the astonishing new understandings of quantum physics.

    A religious conference has been called in nearby Rudolstadt which will determine doctrine for all the Lutherans in the nation. The hard-fought principle of religious freedom is at stake, threatened alike by intransigent theologians and students rioting in the streets.As if that weren't bad enough:* the up-time American Lutherans are themselves divided;* a rambunctious old folk singer is cheerfully pouring gasoline on the flames;* and a Calvinist "facilitator" from Geneva is maneuvering to get the U.S. involved with the developing revolutionary movement in Naples.Stories include:* Portraits by Eric Flint* Anna's Story by Loren Jones* Curio and Relic by Tom Van Natta* The Sewing Circle by Gorg Huff* The Rudolstadt Colloquy by Virginia DeMarce* Radio in the 1632 Universe by Rick Boatright* They've Got Bread Mold, So Why Can't They Make Penicillin? by Robert Gottlieb* Horse Power by Karen Bergstralh

    Reprint.

    But the governments and power structures didn't yet control space, where bold new techniques could freely be applied and the vast resources of the solar system could be utilized by such courageous men and women as: • Aneas MacKenzie—he had believed in the man he had helped to reach the office of the presidency of the United States, and had tirelessly rooted out corruption wherever he found it, until the trail led straight back to the White House. After that, no place on Earth was safe for him. • Laurie Jo Hansen—she controlled a multi-national corporation more powerful than many governments. Unlike those governments, she wanted to see Earth’s problems solved and reaching the high frontier was the only way to do that. • Kevin Senecal—he had made the mistake of fighting back against a juvenile gang, and accidentally killing one of them while escaping. Both the gang and the law were after him, and on all of Earth there was no place to hide. • Ellen MacMillan—a young employee of the Hansen Corporation who fascinated Kevin, she was on a secret mission, and the biggest secret was her real name.   Two complete novels—High Justice and Exiles to Glory—in one volume by a New York Times best-selling author, telling of an Earth sinking into a morass of corruption, red tape, and failure of nerve, while a dedicated few dare to reach for the stars.

    Here the Indo-Aryan invasions went east across Asia and down the Aleutian Islands into North America, where they have stagnated for thousands of years. Dropped off into the middle of a local dispute, Corporal Calvin Morrison comes face to face with warriors armed with pikes and broadswords, not petty criminals. Lord Kalvan, as the locals call him, transforms the petty Princedom of Hostigos into a fearsome warrior Kingdom by inspired leadership and advanced military knowledge.Now, after having created and saved his new nation of Hos-Hostigos from destruction by Styphon's House, a tyrannical theocracy that holds sacred the secret formula for gunpowder, Kalvan, now Great King of Hos-Hostigos, faces his greatest challenge-keeping what he has won.The Holy Host of Styphon and the Royal Army of Hos-Harphax, two of the greatest armies in the history of the Five Kingdoms, are on the move and Kalvan will once again have to call upon his knowledge of military history to save his family and friends. This time it's personal!

    The Federated States of Columbia has consolidated power and risen against the oppression of Earth's corrupt Caliphate. But when Salafi madmen bent on a new jihad kill FSC Captain Patrick Hennessey's family in a cowardly attack, they create an enemy that will show even less mercy than they do.A legendary warrior is born: Carrera, the scourge of Salafism. He will forge an army from the decrepit remains of a military in a failing state. He will find those who killed his family. He will destroy them utterly. And he will try like hell to not becoming exactly like the enemy he is fighting. Only when he is finished will there be peace: the peace of an empty wind as it blows across a desert strewn with the bones of Carrera's enemies.

    But it all becomes horrifyingly real when a murder in the past destroys the foundation of Kate’s present-day life. Suddenly, that medallion is the only thing protecting Kate from blinking out of existence.Kate learns that the 1893 killing is part of something much more sinister, and Kate’s genetic ability to time-travel makes her the only one who can stop him. Risking everything, she travels to the Chicago World’s Fair to try to prevent the killing and the chain of events that follows.Changing the timeline comes with a personal cost, however—if Kate succeeds, the boy she loves will have no memory of her existence. And regardless of her motives, does she have the right to manipulate the fate of the entire world?