Singularité

Timelike Infinity is a 1992 science fiction book by British author Stephen Baxter. The second book in the Xeelee Sequence, Timelike Infinity introduces a universe of powerful alien species and technologies that manages to maintain a realistic edge because of Baxter's physics background. It largely sets the stage for the magnum opus of the Xeelee Sequence, Ring (as opposed to Vacuum Diagrams, Flux, or Raft, which concern themselves with side stories).