In the year 2100, mankind on Earth, settlers in a lunar colony, and aliens from the para-universe (a strange universe parallel in time to our own) face a race against time as they try to prevent the total destruction of the Earth by the invention of an Inter-Universe Electron Pump.

At last, the costly and bitter war between the two Foundations had come to an end. The scientists of the First Foundation had proved victorious; and now they retum to Hari Seldon''s long-established plan to build a new Empire that the Second Foundation is not destroyed after all-and that its still-defiant survivors are preparing their revenge. Now the two exiled citizens of the Foundation-a renegade Councilman and the doddering historian-set out in...

“A totally new and original work that stretches his talents to their fullest . . . welcome back, champ!”—The Detroit News
In the twenty-third century pioneers have escaped the crowded earth for life in self-sustaining orbital colonies. One of the colonies, Rotor, has broken away from the solar system to create its own renegade utopia around an unknown red star two light-years from Earth: a star named Nemesis.  
Now...

When young Hari Seldon arrives on Trantor, he is unaware of the perilous politics that are brewing. After he presents his paper on psychohistory, he becomes the most wanted man in the Empire. A prequel to the original Foundation trilogy (Foundation, Foundation and Empire, Second Foundation).

Detective Elijah Baley--from The Naked Sun and Caves of Steel--is sent to Aurora to solve the murder of a humaniform robot.

"The Foundation lies in ruins--destroyed by a mutant mind bent on humanity's annihilation. But it's rumored that there's a Second Foundation hidden somewhere at the end of the Galaxy, established as insurance to preserve the knowledge of mankind. Now a desperate race has begun between the survivors of the First Foundation and an alien entity to find this last flicker of humanity's shining past--and future hope. Yet the key to it all might be a fourteen-year-old...

This stand-alone novel is widely regarded as Asimov's best science fiction novel. Andrew Harlan is an Eternal, a member of the elite of the future. One of the few who live in Eternity, a location outside of place and time, Harlan's job is to create carefully controlled and enacted Reality Changes. These Changes are small, exactingly calculated shifts in the course of history, made for the benefit of humankind. Though each Change has been made for

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Subjected to mind erasure because he warns of impending disaster on the planet Florina, the earthman Rik battles unknown foes and memory loss to avert mass destruction.

Three classics of Science Fiction

A collection of 8 short stories and 2 novels about robots by the 20th century American science fiction writer.