Greg Egan's Perihelion Summer is a story of people struggling to adapt to a suddenly alien environment, and the friendships and alliances they forge as they try to find their way in a world where the old maps have lost their meaning.Taraxippus is coming: a black hole one tenth the mass of the sun is about to enter the solar system.Matt and his friends are taking no chances. They board a mobile aquaculture rig, the Mandjet, self-sustaining in food, power and fresh wat...

After the extinction of humans, how do you define humanity?Since the Introdus in the twenty-first century, humanity has reconfigured itself drastically. Most chose immortality, joining the polises to become conscious software. Others opted for gleisners: disposable, renewable robotic bodies that remain in contact with the physical world of force and friction. Many of these have left the solar system forever in fusion-drive starships.And there are the holdou...

"Instantiation" is a collection of eleven science fiction stories by Hugo Award winning author Greg Egan:• "The Discrete Charm of the Turing Machine"• "Zero For Conduct"• "Uncanny Valley"• "Seventh Sight"• "The Nearest"• "Shadow Flock"• "Bit Players"• "Break My Fall"• "3-adica"• "The Slipway"• "Instantiation"

THE HUNDRED LIGHT YEAR DIARY - Scientists can bounce messages from the future back to the present, but there's no guarantee they'll tell the truth ...LEARNING TO BE ME - Crystalline minds may take the place of human brains, but where does the self really lie?CLOSER - Lovers exchange bodies and minds, but their experiments go just that little bit too far, proving that you can have too much of a good thing

Sleep and the Soul contains ten stories from Hugo Award-winning author Greg Egan.• "You and Whose Army?"• "This Is Not the Way Home"• "Zeitgeber"• "Crisis Actors"• "Sleep and the Soul"• "After Zero"• "Dream Factory"• "Light Up the Clouds"• "Night Running"• "Solidity"

When electronics importer Cara Leon goes missing, private investigator Sam Mujrif is hired by her sister to investigate. Cara is eight times taller than Sam, but evidence soon points to players much smaller than either of them. As Sam and his cross-scale colleagues pursue the case, it becomes apparent that Cara's disappearance is linked to the development of technology with the potential to reshape their whole society, and radically alter the balance of power between the scales.

Houston, we have a problem...Life is fragile. The difference between success and failure can come down to nothing – the thread of a screw, the flick of a switch – and when it goes wrong, you fix it... or someone dies.Mission Critical takes us from our world, across the Solar System, and out into deep space to tell the stories of people who had to do the impossible. And do it fast.Featuring stories by Peter F. Hamilton, Yoon Ha Lee, ...

In a world where the cells that make up our bodies are not committed to any one organism, Marla is confronted by the fickleness of her cytes, and resolves to understand them with help from Ada, a centuries-old Flourisher. Swappers like Ruth embrace fluidity, and meet with others to exchange cytes, seeking the perfect mix. But Ruth faces her own crisis, and as the technology to manipulate cytes advances, all three are drawn into a struggle to shape the future of life.

In Yalda's universe, light has mass, no universal speed, and its creation generates energy; on Yalda's world, plants make food by emitting light into the dark night sky. And time is different: an astronaut might measure decades passing while visiting another star, only to return and find that just weeks have elapsed for her friends.On the farm where she lives, Yalda sees strange meteors that are entering the planetary system at an immense, unprecedented speed - and it soon becomes ...

Immortality can be yours . . . at a pricePermutation city is the tale of a man with a vision - how to create immortality - and how that vision becomes grows beyond his control. Encompassing the lives and struggles of an artificial life junkie desperate to save her dying mother, a billionaire banker scarred by a terrible crime, the lovers for whom, in their timeless virtual world, love is not enough - and much more - Permutation city is filled with the sense of wond...

Phoresis and Other Journeys contains three novellas from Hugo Award-winning author Greg Egan.• "The Four Thousand, the Eight Hundred": civil war in an asteroid colony sees refugees fleeing, by any means possible.• "Dispersion": a world where all life is divided into six cyclically invisible and intangible groups faces a terrifying new disease.• "Phoresis": the inhabitants of a double planet embark on an epic, multi-generational project to cross between the twin worlds...

Immortality, but at what price, in what form, and how could you be you? Find out in Greg Egan's "Uncanny Valley," a Tor.com Original short storyIn the near future it’s possible to build a new you, a better you, one that could carry on forever. But if you could carry on, if you could make choices about who you would be forever, how much of your past would you bring with you? Would you be tempted to maybe…edit? Adam isn’t all that he used to be, but he wants to be.