Collection of short stories.
"And everywhere the Humans went, they found life"... the story of Humankind -- all the way to the end of the Universe itself.
Here, in luminous and vivid narratives spanning five million years, are the first Poole wormholes spanning the solar system; the conquest of Human planets by Squeem; GUTships that outrace light; the back-time invasion of the Qax: the mystery and legacy of the Xeelee, and their artifacts as large as small galaxies; photino birds and Dark Matter; and the Ring, where Ghost, Human, and Xeelee contemplate the awesome end of Time.
Filling in the gaps on Baxter's ambitious, almost audacious, 10-million-year timeline called the "Xeelee Sequence", Vacuum Diagrams is a collection of revised, previously published short stories that bridges together his popular novels set in this same "future history"--Raft, Timelike Infinity, Flux, and Ring.
Extraordinary book, I've read several other books by Baxter, and this one probably covers the longest time span of any book I've ever read. A few million years here and there, and pretty soon you're talking about REAL time.
This book reads like a series of short stories, tenuously connected by an over-arching storyline. Why? Because that's what it is. It isn't apparent from the cover. (Or maybe it is and I'm just a doofus.)
Most of the stories are interesting. A few fall flat. The over-arching storyline falls flat, as does the ending.
Overall, it's a nice read if you look at it as a collection of sorta-related short stories rather than one big one. Too bad it's billed as the latter.