Perhaps it wasn't from our time, perhaps it wasn't even from our universe, but the arrival of the 300-kilometer long stone was the answer to humanity's desperate plea to end the threat of nuclear war. Inside the deep recesses of the stone lies Thistledown: the remnants of a human society, versed in English, Russian and Chinese. The artifacts of this familiar people foretell a great Death caused by the ravages of war, but the government and scientists are unable to decide how to use this knowledge.

Miguel de Ruyter is a man with a past. Fleeing the 'wolves'—the xenocidal alien machines known as Inhibitors—he has protected his family and community from attack for forty years, sheltering in the caves of an airless, battered world called Michaelmas. The slightest hint of human activity could draw the wolves to their home, to destroy everything...utterly. Which is how Miguel finds himself on a one-way mission with his own destructive mandate: to eliminate a passing ship, before it can bring unwanted attention down on them.

The urge to explore and discover is a natural and universal one, and the edge of the unknown is expanded with each passing year as scientific advancements inch us closer and closer to the outer reaches of our solar system and the galaxies beyond them. Generations of writers have explored these new frontiers and the endless possibilities they present in great detail. The Final Frontier delivers stories from across this literary spectrum, a reminder that the universe is far large and brimming with possibilities than we could ever imagine, as hard as we may try.

Too long to be a short story, too short to be a novel - welcome to the surprisingly potent world of the novelette. The award-winning magazine Orson Scott Card's Intergalactic Medicine Show has been an online haven for this powerful form of storytelling since 2005. Now its editors have selected their all-time favorite science fiction novelettes from the magazine's eight-year history and reprinted them together in one big book of listening pleasure.

The world is rapidly changing. We surf future-shock every day, as the progress of technology races ever on. Increasingly we are asking: how do we change to live in the world to come? Multi-award-winning editor Jonathan Strahan brings us another incredible volume in his much praised science-fiction anthology series.

Idris has neither aged nor slept since they remade his mind in the war. And one of humanity’s heroes now scrapes by on a freelance salvage vessel, to avoid the attention of greater powers. Eighty years ago, Earth was destroyed by an alien enemy. Many escaped, but millions more died. So mankind created enhanced humans ­such as Idris - who could communicate mind-to-mind with our aggressors. Then these ‘Architects’ simply disappeared, and Idris and his kind became obsolete.

The Reality Dysfunction by Peter F. Hamilton is the first in Night's Dawn, a sweeping galactic trilogy from the master of space opera. In AD 2600 the human race is finally realizing its full potential. Hundreds of colonized planets across the galaxy host a multitude of wildly diverse cultures. Genetic engineering has pushed evolution far beyond nature's boundaries, defeating disease and producing extraordinary space-born creatures.

Adrian Tchaikovksy's critically acclaimed stand-alone novel Children of Time is the epic story of humanity's battle for survival on a terraformed planet. 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.

Humanity welcomed the Olyix and their utopian technology. But mankind was tricked. Now these visitors are extracting a terrible price. For two years, the Olyix have laid siege to Earth, harvesting its people for their god. One by one, cities are falling to their devastating weaponry. And while millions have fled to seek refuge in space, others continue to fight an apparently unwinnable war.

Larry Niven and Jerry Pournelle, award-winning authors of such best sellers as Footfall and The Legacy of Heorot, return us to the Mote, and to the universe of Kevin Renner and Horace Bury, of Rod Blaine and Sally Fowler. There, 25 years have passed since humanity quarantined the mysterious aliens known as Moties within the confines of their own solar system. They have spent a quarter century analyzing and agonizing over the deadly threat posed by the only aliens mankind has ever encountered - a race divided into distinct biological forms, each serving a different function: Master, Mediator, Engineer, Warrior.

Ten years ago, Calamity came. It was a burst in the sky that gave ordinary men and women extraordinary powers. The awed public started calling them Epics. But Epics are no friend of man. With incredible gifts came the desire to rule. And to rule man you must crush his wills. Nobody fights the Epics...nobody but the Reckoners.

There's a reason We Are Legion was named Audible's Best Science Fiction Book of 2016: Its irresistibly irreverent wit! Bob Johansson has just sold his software company for a small fortune and is looking forward to a life of leisure. The first item on his to-do list: Spending his newfound windfall. On an urge to splurge, he signs up to have his head cryogenically preserved in case of death. Then he gets himself killed crossing the street. Waking up 117 years later, Bob discovers his mind has been uploaded into a sentient space probe with the ability to replicate itself.

The First Foundation has been defeated, crushed by the formidable mental powers of the Mule. But whispers of the mysterious Second Foundation, the only hope of defeating the Mule, are beginning to spread. Surviving members of the First Foundation also fear the secret powers of the Second Foundation, vowing to find and destroy it. However, the location of the Second Foundation remains shrouded in mystery. Finding it will lead the Foundation to the opposite end of the Galaxy, where the fate of Seldon’s two Foundations awaits.

For alien Commander Arid Ricimer, there was no going home. His species was winning the war with Earth, but the civilization he had fought for was gone, destroyed from within by ideologues and bureaucrats. So he does the only thing that makes sense to a person of integrity—he attempts to defect to Earth with his officers and an entire spaceship, a vessel that mounts a superweapon of almost unimaginable power.

At first, only a few things are known about the celestial object that astronomers dub Rama. It is huge, weighing more than ten trillion tons. And it is hurtling through the solar system at inconceivable speed. Then a space probe confirms the unthinkable: Rama is no natural object. It is, incredibly, an interstellar spacecraft. Space explorers and planet-bound scientists alike prepare for mankind's first encounter with alien intelligence.