"Remembrance of Earth's Past" is a science fiction trilogy by Chinese author Liu Cixin, consisting of three novels: The Three-Body Problem, The Dark Forest, and Death's End. The series explores humanity's first contact with an alien civilization from the star system Alpha Centauri and the complex consequences that arise from this interaction. The narrative delves into themes of science, philosophy, and the nature of civilization, examining how humanity responds to existential threats. It incorporates advanced scientific concepts, including quantum physics and astrophysics, while also addressing moral dilemmas and the potential for cooperation or conflict between species.