Ethnius

Ethnius is a fictional planet featured in the "Star Wars" Expanded Universe, now known as Legends. It is primarily known as the homeworld of the Ethnians, a species characterized by their distinctive crystalline physiology. These beings are silicon-based lifeforms, with bodies composed of various mineral structures that can refract light and produce natural luminescence.

The planet itself is depicted as a harsh, arid world with a thin atmosphere. Its surface is dominated by vast deserts of silicate sand and jagged mountain ranges rich in mineral deposits. The extreme conditions have led to the evolution of the Ethnians, who are highly adapted to their environment. They possess a slow metabolism and a long lifespan, with their crystalline forms providing natural protection against the planet's radiation and extreme temperatures.

Ethnian society is generally depicted as reclusive and contemplative. They are known for their advanced understanding of geology and mineralogy, and their technology often incorporates crystalline structures. While not inherently hostile, their alien nature and unique biology have often made interactions with other species challenging. They are rarely encountered in galactic affairs, preferring to remain isolated on their homeworld. Information about their culture, social structures, and political systems is limited due to their guarded nature.