Xeelee by Stephen Baxter

Vengeance

In a universe where humanity's existence is threatened by the enigmatic and technologically advanced Xeelee, the story unfolds across vast stretches of space and time. The narrative explores the relentless human spirit as it grapples with the mysteries of the cosmos, the nature of time, and the limits of human understanding. As civilizations rise and fall, the quest for survival and knowledge drives humanity to confront the Xeelee, leading to profound revelations about the universe and humanity's place within it.

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