Foundation and Earth (Foundation)
by Isaac Asimov
Doubleday Hardcover ISBN/ITEM#: 0385233124
Date: 03 September 1986 List Price $16.95 Amazon US / Amazon UK /
From book flap: Barely a millisecond has passed since the close of Foundation's Edge, and Golan Trevize, former Councilman of the First Foundation, finds himself entrusted with an awesome task: to determine the very future of Galactic development. Rejecting the anarchy of a Galactic Empire built on the technology of the First Foundation, as well as that of an Empire based on the mentalics of the Second Foundation, Trevize chooses Gaia. The planet Gaia is a superorganism, a psychic confederation of peoples that finds its strength in mental unity. And merged with humankind, it will metamorphase into a supra-superorganism dedicated to the common good--a world Trevize calls Galaxia.
What instinctive force has led Trevize to this extraordinary concept--does it perhaps lie deep within the ancient history of another great world known as Earth? Trevize is compelled to learn the answer. Discovering that all references to Earth is mysteriously missing from the Galactic Library at Trantor, he sets out in search of the "lost" planet. And as he and his companions, historian Janov Pelorat and the beautiful Gaian woman Bliss, travel from one forbidden world to the next, they face a daring and danger-filled odyssey that will decide the fate of the Empire--and humanity itself.