Foundation Universe

There is a science that reads the future of quadrillions the way an astronomer reads the orbits of stars. It is called psychohistory, and its equations foresee something the ruling Galactic Empire cannot admit: the throne is rotting, and thirty thousand years of barbarism are coming. One man, Hari Seldon, cannot stop the fall. He can only shorten it — by seeding a Foundation of scholars at the rim of the galaxy, a fragile institution built to carry knowledge across the dark and cut the interregnum to a single millennium. This is a universe told in the register of history itself: the long view, the calm of deep time, empires measured in centuries and men measured against them. The spine is Asimov's original trilogy — Foundation, Foundation and Empire, Second Foundation — followed decades later by the sequels Foundation's Edge and Foundation and Earth and the prequels Prelude to Foundation and Forward the Foundation. Late in life Asimov braided this in with his other future histories: the Robot novels of detective Elijah Baley and his humaniform partner R. Daneel Olivaw (The Caves of Steel, The Naked Sun, The Robots of Dawn, Robots and Empire) and the early Galactic Empire novels (Pebble in the Sky and its kin), until one continuous chronicle ran from the first thinking robots to the Second Empire. Other hands extend it — the Second Foundation Trilogy by Gregory Benford, Greg Bear, and David Brin, and shared-world spinoffs such as Robot City — so the corpus sprawls beyond a single author's tidy shelf. What distinguishes it is that the drama is intellectual: crises resolved by insight, nerve, and dialogue rather than fleets and blades, each turn hinging on the hidden logic of the Seldon Plan. Begin where readers have always begun — with Foundation, and the original trilogy in publication order. The rest opens outward from there.