planetary-engineering

The chapter 'Preamble' introduces a future Earth facing an existential crisis as the Sun nears a helium flash, threatening the solar system. Humanity, under the Unity Government, constructs massive Earth Engines to propel the planet out of the solar system in search of a new sun, beginning a centuries-long cosmic journey. The narrative is framed by personal loss and reflections on Liu Cixin's literary style and the cultural significance of his science fiction within China's rapid technological development.

This chapter reflects on Earth's long journey through space after leaving the solar system, describing the frozen atmosphere and altered landscape as the planet travels toward Proxima Centauri. It outlines the timeline of acceleration, cruising, and deceleration phases of the Earth Engines over 2,400 years, and evokes a hopeful vision of Earth's future revival and the flourishing of life on its new home. The narrator expresses a deep emotional connection to the wandering Earth and the legacy that will continue long after their lifetime.