Children Of God by Mary Doria Russell

After surviving a disastrous first-contact mission, a Jesuit priest returns to Earth shattered, facing interrogation, exile, and a crisis of faith and conscience. Years later he seizes a chance to return to the alien world that traumatized him, where his presence—alongside missionaries, scientists, and colonists—sets off social and political upheaval among two unequal native species. The novel examines the moral consequences of cultural contact, the complexities of redemption, and the human costs of trying to “help” another society.

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