Welcome to Ringworld, an intermediate step between Dyson Spheres and planets. The gravitational force created by a rotation on its axis of 770 miles per second means no need for a roof. Walls 1,000 miles high at each rim will let in the sun and prevent much air from escaping. Larry Niven's novel, Ringworld, is the winner of the 1970 Hugo Award for Best Novel, the 1970 Nebula Award for Best Novel, and the 1972 Ditmars, an Australian award for Best International Science Fiction.

On the planet Tython, the ancient Je’daii order was founded. And at the feet of its wise Masters, Lanoree Brock learned the mysteries and methods of the Force - and found her calling as one of its most powerful disciples. But as strongly as the Force flowed within Lanoree and her parents, it remained absent in her brother, who grew to despise and shun the Je’daii, and whose training in its ancient ways ended in tragedy. Now, from her solitary life as a Ranger keeping order across the galaxy, Lanoree has been summoned by the Je’daii Council on a matter of utmost urgency.

From early work like "Rescue Party" and "The Lion of Comarre", through classic stories including "The Star", "Earthlight", "The Nine Billion Names of God", and "The Sentinel" (kernel of the later novel and movie 2001: A Space Odyssey), all the way to later work like "A Meeting with Medusa" and "The Hammer of God", this comprehensive short story collection encapsulates one of the great science fiction careers of all time.

A Fire Upon the Deep is the big, breakout book that fulfills the promise of Vinge's career to date: a gripping tale of galactic war told on a cosmic scale. Thousands of years hence, many races inhabit a universe where a mind's potential is determined by its location in space, from superintelligent entities in the Transcend, to the limited minds of the Unthinking Depths, where only simple creatures and technology can function.

They're out there...waiting...watching. Unseen by normal eyes, but all too visible to Slim MacKenzie, a young man blessed - or cursed - by Twilight Eyes.

Surrounded by secrecy, it is home to the wildest dreams and darkest nightmares. Incredible amounts of money have been lavished on it. The best minds of two generations have labored to build it. And somehow, bit by bit, it is claiming the Earth's most valuable resource - its children.

Untouched by Human Hands consists of 13 stories of beings who dwell on the strange borders of reality. Some of these stories tell of people you know or of events that might happen - but haven't yet. Some will take you to the furthermost reaches of the sky and to planets whose names are unknown this side of Arcturus. And some - perhaps the richest and most memorable of these stories - open into the interior of strange minds to reveal the reflection of ourselves.

Marooned in outer space after an attack on his ship, Nomad, Gulliver Foyle lives to obsessively pursue the crew of a rescue vessel that had intended to leave him to die.

After more than two hundred years as a corpsicle, Jaybee Corbell awoke in someone else’s body and under threat of instant annihilation if he made a wrong move while they were training him for a one-way mission to the stars. But Corbell bided his time and made his own move. Once he was outbound, where the society that ruled Earth could not reach him, he headed his starship toward the galactic core.

This book contains 26 of the greatest science fiction stories ever written. They represent the considered verdict of the Science Fiction Writers of America, those who have shaped the genre and who know, more intimately than anyone else, what the criteria for excellence in the field should be. The authors chosen for the Science Fiction Hall Fame are the men and women who have shaped the body and heart of modern science fiction; their brilliantly imaginative creations continue to inspire and astound new generations of writers and fans.

Bent on taking over the earth, the deadly Thone have planted a monstrous device on our planet's surface. Trapped inside is a group of scientists, spies, and innocent bystanders. Part maze, part torture chamber, part laboratory, the house of doors is a test. If its captives survive, the Thone will withdraw from earth and leave us in peace.

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.

On the edge of a war-weary and devastated galaxy, charismatic Lewis Orne has landed on Hamal. His assignment: To detect any signs of latent aggression in this planet's population. To his astonishment, he finds that his own latent extrasensory powers have suddenly blossomed, and he is invited to join the company of "gods" on this planet - and the people here place certain expectations on their gods.

Penguin presents the audiobook edition of Twelve Angels Weeping written and read by Dave Rudden, with additional narration from Pippa Bennett-Warner and Nicholas Briggs. On every planet that has existed or will exist, there is a winter.... Many of the peoples of Old Earth celebrated a winter festival. A time to huddle together against the cold; a time to celebrate being halfway out of the dark. But shadows are everywhere, and there are some corners of the universe which have bred the most terrible things, lurking in the cold between the stars.

Space travel has been abandoned in the 22nd century. It is deemed too dangerous, expensive, and inconvenient - and now the all-powerful Fishhook company holds the monopoly on interstellar exploration for commercial gain. Their secret is the use of "parries", human beings with the remarkable telepathic ability to expand their minds throughout the universe.