lömunu

Lömunu is a fictional planet featured in the science fiction novel "The Expanse" series by James S.A. Corey. It is a tidally locked planet orbiting a red dwarf star, meaning one side perpetually faces the star while the other remains in darkness. This extreme celestial condition results in starkly contrasting environments. The star-facing side, known as the "Dayside," is scorched and barren, with little to no atmosphere or surface water. Conversely, the dark side, or "Nightside," is frozen and inhospitable, covered in thick ice sheets.

A habitable zone exists along the terminator, the twilight band between the Dayside and Nightside. This region experiences perpetual twilight, with temperatures that allow for the potential existence of liquid water and a breathable atmosphere, albeit thin. The planet's atmosphere is primarily composed of nitrogen and carbon dioxide, with trace amounts of other gases. Its gravity is slightly lower than Earth's.

Lömunu is characterized by its geological instability, with frequent seismic activity due to the planet's tidal stresses and the underlying tectonic processes. The surface is rugged, with deep canyons and mountain ranges carved by ancient geological forces and ongoing erosion from atmospheric phenomena. Life on Lömunu, if it exists, would likely be extremophilic, adapted to the harsh conditions of the twilight zone. The planet holds significant interest for exploration and potential resource extraction due to its unique characteristics and strategic location.