Foundation's Edge

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 return to Hari Seldon's long-established plan to build a new Empire on the ruins of the old. But rumors persist that the Second Foundation is not destroyed after all--and that its still-defiant survivors are preparing their revenge. Now two exiled citizens of the Foundation--a renegade councilman and a doddering historian--set out in search of the mythical planet Earth...and proof that the Second Foundation still exists.
Meanwhile someone--or something--outside both Foundations seems to be orchestrating events to suit its own ominous purpose. Soon representatives of both the First and Second Foundations will find themselves racing toward a mysterious world called Gaia and a final, shocking destiny at the very end of the universe!