A Hunger for the Infinite, which first appeared in Robert Silverberg's Far Horizons anthology, is a novella that takes place in the universe of "The Galactic Center Saga", detailing a galactic war between mechanical and biological life. Here, the pilots had made it to True Center in order to destroy something, anything, important to the Mechs, but Paris had something else on his mind. A story of the Mantis, and the decline of humans beginning in 3600 AD.

Prescient and scientifically accurate, Heart of the Comet is known as one of the great hard SF novels of the 1980s. First published in 1986, it tells the story of an ambitious manned mission to visit Halley's Comet, alter its orbit, and mine it for resources. But all too soon, native cells - that might once have brought life to Earth - begin colonizing the colonists. As factions battle over the comet's future - and that of Earth - only love, courage, and ingenuity can avert disaster and spark a new human destiny.

It isn’t easy to get a group of bestselling SF authors to write new stories for an anthology, but that’s what Elizabeth Anne Hull has done in this powerhouse book. With original, captivating tales by Greg Bear, Gregory Benford, Ben Bova, David Brin, Cory Doctorow, Neil Gaiman, Joe Haldeman, Harry Harrison, Larry Niven, Vernor Vinge, Gene Wolfe, and others, Gateways is a SF event that will be a must-buy for SF readers of all tastes, from the traditional to the cutting edge; from the darkly serious to the laugh-out-loud funny.

Geary knows that some political factions in the Alliance were just trying to get rid of him when he was assigned to escort a diplomatic and scientific mission to the far reaches of humanity's expansion into the galaxy . . . and beyond. But he views his mission as both a duty and an opportunity to make things better wherever he can. And when a crippled Rift Federation ship tumbles out of jump space, Geary leaps into action. But the survivors' story isn't completely adding up. As Geary investigates, he finds himself fending off spies and assassins while leading the fleet across space.

For 30 years, a tiny band of humans has been sheltering in the caverns of an airless, crater-pocked world called Michaelmas. Beyond their solar system lie the ruins of human interstellar civilization, stalked by a ruthless, infinitely patient cybernetic entity determined to root out the last few bands of survivors. One man has guided the people of Michaelmas through the hardest of times and given them hope against the wolves: Miguel de Ruyter.

A short story set in the universe of James S. A. Corey's NYT best-selling Expanse series. Now a Prime Original series. This story will be available in the complete Expanse story collection, Memory’s Legion.

The Mote In God's Eye is their acknowledged masterpiece, an epic novel of mankind's first encounter with alien life that transcends the genre. No lesser an authority than Robert A. Heinlein called it "possibly the finest science fiction novel I have ever read".

Sixteen-year old Hazel lives in the Daedalus, a starship that is flying in search of a new world. The ship has been traveling for 500 years, searching for a world to settle in after having to abandon its last world. Everyone on board Daedalus lives a very simple existence in farming villages. The age of machines supplying their needs was lost during a mutiny 500 years ago. 

Richard Muller was an honorable diplomat who braved unimaginable dangers to make contact with the first-known race of intelligent aliens. But those aliens left a mark on him: a psychic wound that emanates a telepathic miasma that his fellow humans can neither cure nor endure. Muller is exiled to the remote planet of Lemnos, where he is left, deeply embittered, at the heart of a deadly maze - until a new alien race appears, seemingly intent on exterminating humanity.

In AD 2600, the human race is finally beginning to realize its full potential. Hundreds of colonized planets scattered across the galaxy host a multitude of prosperous and wildly diverse cultures. Genetic engineering has pushed evolution far beyond nature's boundaries, defeating disease and producing extraordinary spaceborn creatures. Huge fleets of sentient trader starships thrive on the wealth created by the industrialization of entire star systems, and throughout inhabited space the Confederation Navy keeps the peace.

Sixteen all-new stories by science fiction's top talents, collected by best-selling author George R. R. Martin and multiple-award-winning editor Gardner Dozois.

Six million years ago, at the very dawn of the starfaring era, Abigail Gentian fractured herself into a thousand male and female clones: the shatterlings. Sent out into the galaxy, these shatterlings have stood aloof as they document the rise and fall of countless human empires. They meet every 200,000 years to exchange news and memories of their travels with their siblings.

From Cixin Liu, the New York Times best-selling author of The Three-Body Problem, To Hold Up the Sky is a breathtaking collection of imaginative science fiction.

They first appear as a series of dots on astronomical plates, heading from Saturn directly toward Earth. Since the ringed planet carries no life, scientists deduce the mysterious ship to be a visitor from another star. The world's frantic efforts to signal the aliens go unanswered. The first contact is hostile: the invaders blast a Soviet space station, seize the survivors, and then destroy every dam and installation on Earth with a hail of asteriods.

Imperial Intelligence couldn't find them, the Imperial Fleet couldn't catch them, and local defenses couldn't stop them. It seemed the planet-wrecking pirates were invincible. But they made a big mistake when they raided ex-commando leader Alicia DeVries' quiet home/work, tortured and murdered her family, and then left her for dead. Alicia decided to turn "pirate" herself, and stole a cutting-edge AI ship from the empire to start her vendetta. Her fellow veterans think she's gone crazy, the Imperial Fleet has shoot-on-sight orders. And, of course, the pirates want her dead, too.