Against Infinity

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On the poisonous, icy surface of Ganymede, a man and a boy are on a deadly hunt. Their prey is the Aleph - an unknowable, alien artifact that has roamed and ruled Ganymede for countless millennia. Indescribable, infinitely dangerous, the Aleph haunts men's dreams and destroys all efforts to terraform Ganymede into a habitable planet. Now in a modern world an ancient struggle begins, as a boy seeks manhood, a man seeks enlightenment, and a society seeks the power to rule the universe. In Gregory Benford's first novel since Timescape, men discover that the Aleph is their prey - and their destiny!