John Varley's monumental trilogy - Titan, Wizard, and Demon - has achieved cult status, hailed as a modern triumph of the imagination by critics and fans. It begins with humankind's exploration of a massive satellite orbiting Saturn. It culminates in a shocking discovery: the satellite is a giant alien being. Her name is Gaea. Her awesome interior is mind-boggling - because it is a mind. A mind that calls out to explorers...and transforms all who enter.

As Chinese and US spacecraft compete to be the first to land on Mars, a former astronaut, his cousin, and four teens from Florida decide to take matters into their own hands. If they can quickly build their own space-worthy ship using scrap metal, appliances, and power tools, they have a chance to come from behind - thanks to an inventive new power source that can propel them to the Red Planet within three days. No guts, no glory.

Fleeing Earth after an alien invasion, the human race stands on the threshold of evolution. Their new home is Luna, a moon colony blessed with creature comforts, prolonged lifespans, digital memories, and instant sex changes. But the people of Luna are bored, restless, suicidal - and so is the computer that monitors their existence.

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".

Not content with investing his fortune and watching it grow, multibillionaire Howard Christian buys rare cars that he actually drives, acquires collectible toys that he actually plays with, and builds buildings that defy the imagination. But now his restless mind has turned to a new obsession: cloning a mammoth. In a barren province of Canada, a mammoth hunter financed by Christian has made the discovery of a lifetime: an intact frozen woolly mammoth. But what he finds during the painstaking process of excavating the huge creature baffles the mind.

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.

Litany of the Long Sun contains the full texts of Nightside the Long Sun and Lake of the Long Sun that together make up the first half of The Book of the Long Sun. This great work is set on a huge generation starship in the same future as the classic Book of the New Sun (also available in two volumes from Orb).

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.

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!

Best-selling science fiction superstars Larry Niven and Jerry Pournelle combine their talents with those of Steven Barnes in an extraordinary adventure of humankind’s first outpost in the farthest reaches of space. Light years from Earth, colonists land on a planet they name Avalon. It seems like a paradise—until native creatures savagely attack. It will take every bit of intelligence, courage, and military-style discipline to survive.

For fans of The Martian, an extraordinary new thriller of the future from number one New York Times - best-selling and Pulitzer Priz - winning author John Sandford and internationally known photo-artist and science fiction aficionado Ctein. The year is 2066. A Caltech intern inadvertently notices an anomaly from a space telescope - something is approaching Saturn, and decelerating. Space objects don’t decelerate. Spaceships do.

. C. “Scar” Gordon was on the French Riviera recovering from a tour of combat in Southeast Asia, but he hadn’t given up his habit of scanning the personals in the newspaper. One ad in particular leapt out at him: "Are you a coward? This is not for you. We badly need a brave man. He must be 23 to 25 years old, in perfect health, at least six feet tall, weigh about 190 pounds, fluent English with some French, proficient with all weapons, some knowledge of engineering and mathematics essential...."

After the fall of the American Ayatollahs as foretold in Stranger in a Strange Land and chronicled in Revolt in 2100, the United States of America at last fulfills the promise inherent in its first Revolution: for the first time in human history there is a nation with Liberty and Justice for All. No one may seize or harm the person or property of another, or invade his privacy, or force him to do his bidding. Americans are fiercely proud of their re-won liberties and the blood it cost them; nothing could make them forswear those truths they hold self-evident. Nothing except the promise of immortality…

When a stranger attempting to deliver a cryptic message is shot dead at his dinner table, Richard Ames is thrown headfirst into danger, intrigue, and other dimensions where Lazarus Long still thrives, where Jubal Harshaw lives surrounded by beautiful women, and where a daring plot to rescue the sentient computer called Mike can change the direction of all human history.

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.

Dragons are trained to fight to the death, and two determined teens help free them in this spellbinding saga. Training a dragon to be a fighting champion is the only way to freedom for 15-year-old Jakkin.

Four decades after the Oblivion Crisis, Tamriel is threatened anew by an ancient and all-consuming evil. It is Umbriel, a floating city that casts a terrifying shadow-for wherever it falls, people die and rise again. And it is in Umbriel's shadow that a great adventure begins and a group of unlikely heroes meet. A legendary prince with a secret. A spy on the trail of a vast conspiracy. A mage obsessed with his desire for revenge. And Annaïg, a young girl in whose hands the fate of Tamriel may rest.

Udo's biggest problem isn't being a digger (that's low class), or staying drunk (that's damn expensive), or avoiding the Dwergaz (they're monsters), or even pissing off the supposed Gods. It's that his reality...well, it isn't what he thought. And now, he can't even afford to drink because his so-called friend Nicz is cutting into his business, digging up tin, iron, and copper. So Udo forms a new plan: clay. After all, clay jars are used to store everything: meat, herbs, and, his personal favorite, ale.

In the blink of an eye, everyone disappears. Gone. Except for the young. There are teens, but not one single adult. Just as suddenly, there are no phones, no Internet, no television. No way to get help. And no way to figure out what's happened. Hunger threatens. Bullies rule. A sinister creature lurks. Animals are mutating. And the teens themselves are changing, developing new talents - unimaginable, dangerous, deadly powers - that grow stronger by the day. It's a terrifying new world.

After being thrown out of the window of his luxury apartment, science-fiction writer Allen Carpentier wakes to find himself at the gates of Hell. Feeling he's landed in a great opportunity for a book, he attempts to follow Dante's road map. Determined to meet Satan himself, Carpentier treks through the nine circles of Hell, led by Benito Mussolini, and encounters countless mental and physical tortures.

For years, the Empress of Namorn has pressed her young cousin, Lady Sandrilene fa Toren, to visit her vast lands within the Empire's borders. Sandry has avoided the invitation for as long as it was possible. Now, Sandry has agreed to pay that overdue visit. Sandry's uncle promises guards to accompany her. But they're hardly a group of warriors! They're her old friends from Winding Circle: Daja, Tris, and Briar. Sandry hardly knows them now. They've grown up and grown apart.

The Jubilee Tides will drown the continents of the planet Miranda beneath the weight of her own oceans. But as the once-in-two-centuries cataclysm approaches, an even greater catastrophe threatens this dark and dangerous planet of tale-spinners, conjurers, and shapechangers. From author Michael Swanwick—one of the most brilliantly assured and darkly inventive writers of contemporary fiction—comes a masterwork of radically altered realities and world-shattering seductions.

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.

Even though ­thirteen-­year-­old Marcus Kanenas is confined to a wheelchair, he sees himself as a survivor and a dreamer. In fact, his favorite dream is of a world far away, a world where magic is as common as air, where animals tell jokes, and where trees beg people to pick their fruit. He even has a name for this place - Farworld. When Marcus magically travels to Farworld, he meets Kyja, a girl without magic in a world where spells, charms, and potions are everywhere.

Dr. Warthrop is a scientist who tracks and studies real-life monsters. Assisted by his 12-year-old apprentice, Will Henry, Dr. Warthrop discovers a pod of Anthropophagi and launches a hunt to destroy the foul beasts.

Long before Amy Gumm got swept away from a Kansas trailer park...Dorothy Gale received a package on the night of her 16th birthday: a pair of red high-heeled shoes. "Dear Dorothy," the note read. "I thought about silver to match the ones you lost, but in the end I decided that red was more your color. I think you know what to do with them."

Ravirn is not your average computer geek. A child of the Fates - literally - he’s a hacker extraordinaire who can zero in on the fatal flaw in any program. Now that 21st-century magic has gone digital that makes him a very talented sorcerer. But a world of problems is about to be downloaded on Ravirn - who’s just trying to pass his college midterms. Great Aunt Atropos, one of the three Fates, decides that humans having free will is really overrated and plans to rid herself of the annoyance....

In upstate New York, in the woods around Woodstock, Dutchman's Creek flows out of the Ashokan Reservoir. Steep-banked, fast-moving, it offers the promise of fine fishing, and of something more, a possibility too fantastic to be true. When Abe and Dan, two widowers who have found solace in each other's company and a shared passion for fishing, hear rumors of the Creek, and what might be found there, the remedy to both their losses, they dismiss it as just another fish story.

Strike the Anvil of Time! Vanderjack is a mercenary with a troubled past and a sword haunted by ghosts. Hired to rescue a nobleman's daughter from behind enemy lines, the sellsword finds himself a pivotal player in the liberation of Nordmaar from the Red Dragon army. The Chronicler is charged to use the ancient Anvil of Time to travel back along the river of time and find the lost stories that fell between the pages of the history books of Krynn in this new series created and guided by the creative mind of Tracy Hickman.

Joey Harker isn't a hero. In fact, he's the kind of guy who gets lost in his own house. But then one day, Joey gets really lost. He walks straight out of his world and into another dimension. Joey's walk between the worlds makes him prey to two terrible forces: armies of magic and science who will do anything to harness his power to travel between dimensions.