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.

Fleet of Worlds takes a closer look at Human-Puppeteer (Citizen) relations and the events leading up to Niven's first Ringworld novel. Kirsten Quinn-Kovacks is among the best and brightest of her people. She gratefully serves the gentle race that rescued her ancestors from a dying starship, gave them a world, and nurtures them still. If only the Citizens knew where Kirsten's people came from.

In 2204, humanity is expanding into the wider galaxy in leaps and bounds. Cutting-edge technology of linked jump gates has rendered most forms of transportation - including starships - virtually obsolete. Every place on Earth, every distant planet humankind has settled, is now a step away from any other. And all seems wonderful - until a crashed alien spaceship of unknown origin is found on a newly located world 89 light-years from Earth, carrying a cargo as strange as it is horrifying. To assess the potential of the threat a high-powered team is dispatched to investigate. But one of them may not be all they seem....

The year is 3326. Nigel Sheldon, one of the founders of the Commonwealth, receives a visit from the Raiel - self-appointed guardians of the Void, the enigmatic construct at the core of the galaxy that threatens the existence of all that lives. The Raiel convince Nigel to participate in a desperate scheme to infiltrate the Void. Once inside, Nigel discovers that humans are not the only life-forms to have been sucked into the Void. The humans trapped there are afflicted by an alien species of biological mimics.

AD 3580. The Intersolar Commonwealth has spread through the galaxy to over a thousand star systems. It is a culture of rich diversity with a place for everyone. A powerful navy protects it from any hostile species that may lurk among the stars. For Commonwealth citizens, even death has been overcome.

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.

Jon Ryan was supposed to be dead. He wanted to be dead. But Jon wakes up in the far future with an alien burrowing in his chest for salvage. Someone was going to pay for this. Check that. Lots of people were going to pay for this. Jon was the first astronaut to download to an android host to find the population of doomed Earth a new home. But that was so long time ago. He is now literally lost in time.

Winner of the Nebula Award for Best Novel, Red Mars is the first book in Kim Stanley Robinson's best-selling trilogy. Red Mars is praised by scientists for its detailed visions of future technology. It is also hailed by authors and critics for its vivid characters and dramatic conflicts.

For centuries, the red planet has enticed the people of Earth. Now an international group of scientists has colonized Mars. Leaving Earth forever, these 100 people have traveled nine months to reach their new home. This is the remarkable story of the world they create - and the hidden power struggles of those who want to control it.

The Assassin: Surrounded by dark elves, Artemis Entreri tightens his grip on the streets of Calimport. While he urges caution, his black-skinned sponsor grows ever more ambitious. The assassin will soon find himself on a path his most hated enemy has walked before him - a path that leads to a place where someone like Entreri would never be welcome. The Drow: Jarlaxle has ascended from dark Menzoberranzan with only evil intentions. The malevolent Crystal Shard’s influence on him intensifies until even the drow agents he brought with him grow fearful.

On a cold spring night in 1952, a huge meteorite fell to earth and obliterated much of the East Coast of the US, including Washington, DC. The ensuing climate cataclysm will soon render the Earth inhospitable for humanity, as the last such meteorite did for the dinosaurs. This looming threat calls for a radically accelerated effort to colonize space and requires a much-larger share of humanity to take part in the process. Elma York’s drive to become the first lady astronaut is so strong that even the most dearly held conventions of society may not stand a chance against her.

In ancient days, sorcerers sought to learn the One True Spell that would give them power over all the world and understanding of all magic.... The One True Spell was a woman, and her name was Mystra - and her kisses were wonderful. It is the time before Myth Drannor, when the Heartlands are home to barbarians, and wicked dragons rule the skies. In these ancient days, Elminster is but a shepherd boy, dreaming of adventure and heroics. When a dragon-riding magelord sweeps down upon him, though, the boy is thrust into a world of harsh realities, corrupt rulers, and evil sorcerers.

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.

Nine hundred thousand years ago, something annihilated the Amarantin civilization just as it was on the verge of discovering space flight. Now one scientist, Dan Sylveste, will stop at nothing to solve the Amarantin riddle before ancient history repeats itself. With no other resources at his disposal, Sylveste forges a dangerous alliance with the cyborg crew of the starship Nostalgia for Infinity. But as he closes in on the secret, a killer closes in on him because the Amarantin were destroyed for a reason.

Sequestered in the blackness of the dreaded Tower of High Sorcery in Palanthas, surrounded by nameless creatures of evil, Raistlin Majere weaves a plan to conquer the darkness - to bring it under his control. Crysania, a beautiful and devoted cleric of Paladine, tries to use her faith to lead Raistlin from the darkness. She is blind to his shadowed designs, and he draws her slowly into his neatly woven trap. Made aware of Raistlin’s plan, a distraught Caramon travels back in time to the doomed city of Istar in the days before the Cataclysm.

In a world scarred by an apocalyptic past, evoking a time both 2,000 years past and 2,000 years into the future, untold thousands gather for a crusade. Among them, two men and two women are ensnared by a mysterious traveler, Anasûrimbor Kellhus - part warrior, part philosopher, part sorcerous, charismatic presence - from lands long thought dead. The Darkness That Comes Before is a history of this great holy war, and like all histories, the survivors write its conclusion.