Anvil of Stars
Bear, Greg. Anvil of Stars. New York: Warner Books, 1992. S. F. Book Club edn., no ISBN.
Sequel to Forge of God. Self-replicating planet-killing machines have destroyed the Earth. Humanity has been rescued by the Benefactors, members of a universal coalition who have sent 82 teenagers on a quest to destroy the civilization responsible for creating the planet-killers. Features robotic "Moms" and the personality of the Benefactor ship, charged with preparing the children to destroy the species that created the planet-killing robots. (DDB, 23/01/95)