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.

One starship will either save Earth or destroy her. A century ago our star erupted, destroying Earth's wormhole network and closing off trade with her colonized planets. After being out of contact with the younger worlds for so many years, Humanity is shocked when a huge ship appears at the edge of the solar system. Our outdated navy investigates, both curious and fearful. What they learn from the massive vessel shocks the planet.

The very far future: The Galaxy is a drifting wreck of black holes, neutron stars, chill white dwarfs. The age of star formation is long past. Yet there is life here, feeding off the energies of the stellar remnants, and there is mind, a tremendous Galaxy-spanning intelligence each of whose thoughts lasts a hundred thousand years. And this mind cradles memories of a long-gone age when a more compact universe was full of light...

Fresh from his latest collaboration with Terry Pratchett on the Long Earth sequence Stephen Baxter now returns to the mysteries and challanges first hinted at in his acclaimed novel PROXIMA. In PROXIMA we discovered ancient alien artifacts on the planet of Per Ardua - hatches that allowed us to step across light years of space as if we were stepping into another room. The universe opened up to us. Now in ULTIMA the consequences of this new freedom make themselves felt.

Men had built cities before, but never such a city as Diaspar; for millennia its protective dome shut out the creeping decay and danger of the world outside. Once, it ruled the stars. But then, as legend had it, the Invaders came, driving humanity into this last refuge. It takes one man, a Unique, to smash the legend and discover the true nature of the Invaders.

AD 2204. An alien shipwreck is discovered on a planet at the very limits of human expansion - so Security Director Feriton Kayne selects a team to investigate. The ship’s sinister cargo not only raises bewildering questions but could also foreshadow humanity’s extinction. It will be up to the team to bring back answers, and the consequences of this voyage will change everything. Back on Earth, we can now make deserts bloom and extend lifespans indefinitely, so humanity seems invulnerable. We therefore welcomed the Olyix to Earth when they contacted us. But were the Olyix a blessing or a curse?

Following an accident that almost cost him his life, Howard Falcon was not so much saved as he was converted, through the use of prosthetics, into something faster, stronger and smarter...but also slightly less human and more machine than he was. And with this change came an opportunity - that of piloting a mission into Jupiter's atmosphere and ultimately of making first contact with the life forms he discovers there.

When Dan McCarthy stumbles upon a folder containing evidence of the conspiracy to end all conspiracies - a top-level alien cover-up - he leaks the files without a second thought. The incredible truth revealed by Dan's leak immediately captures the public's imagination, but Dan's relentless commitment to exposing the cover-up and forcing disclosure quickly earns him some enemies in high places.

When Ivan Pritchard signs on as a newbie aboard the Mad Astra, it's his final, desperate stab at giving his wife and children the life they deserve. He can survive the hazing of his crewmates, and how many times, really, can near-zero g make you vomit? But there's another challenge looming out there, in the farthest reaches of human exploration, that will test every man, woman and AI on the ship - and will force Ivan to confront the very essence of what makes him human.

The Argus Space Station looks down on a nightmarish Earth. And from this safe distance, the Committee enforces its despotic rule. There are too many people and too few resources, and they need 12 billion to die before Earth can be stabilized. So corruption is rife, people starve, and the poor are policed by mechanized overseers and identity-reader guns. Citizens already fear the brutal Inspectorate with its pain inducers. But to reach its goals, the Committee will unleash satellite laser weaponry, taking carnage to a new level.

When the silent spacecraft arrived and took the light from the world, no one knew what to expect. When the Overlords finally showed themselves it was a shock but one that humankind could now cope with, and an era of peace, prosperity and endless leisure began. But the children of this utopia dream strange dreams of distant suns and alien planets, and soon they will be ready to join the Overmind...and, in a grand and thrilling metaphysical climax, leave Earth behind.

In 2088 humankind is at last ready to explore beyond Earth's solar system, and astrophysicist Reggie Straifer knows where we should go. He's discovered a distant anomalous star that appears to defy the laws of physics. It could be a weird natural phenomenon, or it could be alien. Convoy 7's mission to discern the nature of the star's strange qualities will use vast resources and take centuries, so in order to maintain the genetic talent of the first crew, clones will be used for the expedition.

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.

In 2061 a young scientist invents a time machine to fix a tragedy in his past. But his good intentions turn catastrophic when an early test reveals something unexpected: the end of the world. A desperate plan is formed: recruit three heroes, ordinary humans capable of extraordinary things, and change the future.

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".