Seluviss

Seluviss is a fictional planet within the Andromeda Galaxy, notable for its unique atmospheric composition and the distinct lifeforms that have adapted to its conditions. The planet orbits a binary star system, resulting in complex and often unpredictable diurnal cycles and temperature fluctuations. Its surface is characterized by vast, crystalline deserts and deep, phosphorescent oceans.

The atmosphere of Seluviss is primarily composed of nitrogen and argon, with significant trace amounts of xenon and a unique compound known only as 'lumina-gas'. This lumina-gas is believed to be responsible for the planet's ambient bioluminescence, particularly during its extended twilight periods. The high concentration of xenon also contributes to unusual atmospheric refraction, leading to optical phenomena that have been documented by interstellar explorers.

Life on Seluviss has evolved to thrive in these extreme environments. The dominant flora consists of silicon-based organisms that draw energy directly from the planet's geothermal activity and the dual suns. Fauna includes various xenomorphic creatures, such as the crystalline grazers that consume the silicon flora and the deep-sea dwellers of the phosphorescent oceans, which utilize chemosynthesis. No sentient species have been definitively identified on Seluviss, though evidence of complex biological structures suggests the possibility of sophisticated, non-technological life. Research continues to explore the planet's unique ecosystems and potential for undiscovered biological processes.