Eternity

A messenger from the end of time topples the precarious balance of power that exists between the Old Natives of Earth and their benefactors, the human members of the Hexamon who live inside the asteroid Thistledown. As political rivals, inhuman alien intelligences, and travellers from alternate worlds meet in a corridor of possibilities, the destiny of the world hinges on the fragility of human choice. Showcasing Bear's imagination and considerable storytelling talent, this sequel to Eon is highly recommended.