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, incredible, an interstellar spacecraft. Space explorers and planet-bound scientists alike prepare for mankind's first encounter with alien intelligence. It will kindle their wildest dreams... and fan their darkest fears. For no one knows who the Ramans are or why they have come. And now the moment of rendezvous awaits -- just behind a Raman airlock door.

In December, 1999, a multinational team journeys out to the stars, to the most awesome encounter in human history. Who -- or what -- is out there?

In Cosmos, Carl Sagan explained the universe. In Contact, he predicts its future -- and our own.

All over the world, the metapsychics are honing their skills, learning to stretch their incredible minds far beyond the ken of ordinary humans. Most are dedicated to the harmony of the human soul. But some have darker intentions...

If the metapsychics succeed in uniting Earth's minds to take the next step up in human evolution, a place awaits humanity among the alien peoples of the fabulous Galactic Milieu. But if evil minds prevail in their bid for power, Earth will be cut off... and mankind forever doomed!

Gateway opened on all the wealth of the Universe...and on reaches of unimaginable horror. When prospector Bob Broadhead went out to Gateway on the Heechee spacecraft, he decided he would know which was the right mission to make him his fortune. Three missions later, now famous and permanently rich, Robinette Broadhead has to face what happened to him and what he is...in a journey into himself as perilous and even more horrifying than the nightmare trip through the interstellar void that he drove himself to take!

One of the greatest science fiction novels ever published, Stranger in a Strange Land's original manuscript had 50,000 words cut. Now they have been reinstated for this special 30th anniversary trade edition. A Mars-born earthling arrives on this planet for the first time as an adult, and the sensation he creates teaches Earth some unforgettable lessons. "A brilliant mind-bender."--Kurt Vonnegut.

Lt. Frank Carlucci is drawn into an investigation surrounding the disappearance of his daughter's friend. But as Carlucci digs deeper, the corruption and decay he finds is nothing compared to a final horror that could have devastating implications: a secret known only as Cancer Cell.

Here is the novel that will be forever considered a triumph of the imagination. Set on the desert planet Arrakis, Dune is the story of the boy Paul Atreides, who would become the mysterious man known as Maud'dib. He would avenge the traitorous plot against his noble family--and would bring to fruition humankind's most ancient and unattainable dream.

A stunning blend of adventure and mysticism, environmentalism and politics, Dune won the first Nebula Award, shared the Hugo Award, and formed the basis of what is undoubtedly the grandest epic in science fiction. Frank Herbert's death in 1986 was a tragic loss, yet the astounding legacy of his visionary fiction will live forever.

"Unique...I know nothing comparable to it except Lord of the Rings."--Arthur C. Clarke

On the world called Hyperion, beyond the law of the Hegemony of Man, there waits the creature called the Shrike.  There are those who worship it.  There are those who fear it.  And there are those who have vowed to destroy it.  In the Valley of the Time Tombs, where huge, brooding structures move backward through time, the Shrike waits for them all.  On the eve of Armageddon, with the entire galaxy at war, seven pilgrims set forth on a final voyage to Hyperion seeking the answers to the unsolved riddles of their lives.  Each carries a desperate hope--and a terrible secret.  And one may hold the fate of humanity in his hands.  

1855: The Industrial Revolution is in full swing, powered by steam-driven cybernetic Engines. Charles Babbage perfects his Analytical Engine, and the computer age arrives a century ahead of its time. Three extraordinary characters race toward a rendezvous with the future: Sybil Gerard—fallen woman, politician’s tart, daughter of a Luddite agitator; Edward “Leviathan” Mallory—explorer and paleontologist; Laurence Oliphant—diplomat, mystic, and spy. Their adventure begins with the discovery of a box of punched Engine cards of unknown origin and purpose. Cards someone wants badly enough to kill for.

Part detective story, part historical thriller, The Difference Engine took the science fiction community by storm when it was first published twenty years ago.

For eons, Earth has been under observation by the Firstborn, beings almost as old as the universe itself. The Firstborn are unknown to humankind— until they act. In an instant, Earth is carved up and reassembled like a huge jigsaw puzzle. 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. . . .

Something exciting has been happening in modern SF. After decades of confusion, many of the field's best writers have been returning to the subgenre called, roughly, "hard SF"-science fiction focused on science and technology, often with strong adventure plots. Now, World Fantasy Award-winning editors David G. Hartwell and Kathryn Cramer present an immense, authoritative anthology that maps the development and modern-day resurgence of this form, argues for its special virtues and present preeminence-and entertains us with some spectacular storytelling along the way.

Included are major stories by contemporary and classic names such as Poul Anderson, Stephen Baxter, Gregory Benford, Ben Bova, David Brin, Arthur C. Clarke, Hal Clement, Greg Egan, Joe Haldeman, Nancy Kress, Paul McAuley, Frederik Pohl, Alastair Reynolds, Kim Stanley Robinson, Robert J. Sawyer, Karl Schroeder, Charles Sheffield, Brian Stableford, Allen Steele, Bruce Sterling, Michael Swanwick, and Vernor Vinge.

The Hard SF Renaissance will be an anthology that SF readers return to for years to come.

Tied in to Baxter's masterful Manifold trilogy, these thematically linked stories are drawn from the vast graph of possibilities across which the lives of hero Reid Malenfant have been scattered. It is the year 2025. Reid Malenfant is the commander of a NASA earth-orbiting science platform. The platform is intended to probe the planets of the nearest star system by bouncing laser pulses off them. But no echoes are returned! and Malenfant's reality begins to crumble around him. Huddling with his family, awaiting the end -- or an unknown new beginning -- Malenfant tells stories of other possibilities, other realities. The linked stories encompass the myriad possibilities that might govern our relationship with the universe: are we truly alone, or will we eventually meet other lifeforms? Perhaps intelligent species decide to turn their back on the stars, or maybe expansionist species are destined to fail. The final possibility -- that the Universe as we know it is in fact an elaborate illusion designed to protect us from the fearful reality -- is brilliantly explored in the tour de force novella that ends the volume.