The Assemblies of the Living

John Riley is a physicist who achieves his lifelong dream of unraveling the mysteries of anti-gravity, but along the way, also unwittingly discovers the secret of interstellar communication. When he and a small group of coworkers attempt to respond to an unexpected message, believing it to have originated from somewhere on Earth, they find more than they anticipate. The message is from deep space.

After first contact, humanity learns that the galaxy is a place of ancient and far-reaching authorities. The Earth has not emerged as an autonomous peer into a community of sovereign worlds, but as an involuntary entrant into a galactic society whose demands are not light. John Riley, the physicist who inadvertently touched off first contact with his research into gravitation, now sees that the implications of his discoveries lead to more than technical frontiers. The galaxy, the nature of the Universe itself, is not what humanity has believed it to be.