Ring concludes the Xeelee Sequence.
The novel stands by itself, although events in three of my previous novels, as well as in related short stories, are referred to.
The high-gravitation alternate universe mentioned in Chapter 32 is explored in my novel Raft. The career of Michael Poole, first referred to in Chapter 2, is the heart of my novel Timelike Infinity. The neutron star colonization project discovered in Chapter 29 is described fully in my novel Flux.
The complete timeline of the Xeelee Sequence follows. Novels and stories in the Sequence are included, novels in capitals.
Be assured that, although Ring is the chronological end of the Xeelee story, there are tales left to be told…