Book Description:

In this sequel to Eon, "The Way," a tunnel through time and space connected to the Stone is reopened. Olmy, a scientist, and the product of a new generation of humans maintaining civilization on the asteroid Thistledown (the Stone), Pavel Mirsky, a long dead genius from a ruined past, and Rhita Vaskayza, a mathematical genius from an alternate Earthly future, struggle to save humanity from an inscrutable enemy coming down "The Way" from another part of the universe.

Eternity is a complicated political, social, and science fiction story by one of the best in the business.