Estosia

Estosia is a fictional planet located in the Andromeda galaxy. It is known for its unusual atmospheric composition, which consists primarily of nitrogen and argon, with trace amounts of an unknown element that gives the sky a perpetual violet hue. The planet's surface is characterized by vast, crystalline deserts and towering, geologically active mountain ranges. Life on Estosia is believed to be silicon-based, adapting to the planet's extreme temperatures and low levels of liquid water.

The dominant species on Estosia, known as the K'tharr, are a sentient, crystalline lifeform. They communicate through complex light patterns emitted from their bodies and possess a highly advanced understanding of mineralogy and energy manipulation. Their civilization is ancient, with evidence of their presence dating back millennia, though their societal structure and technological development remain largely enigmatic to off-world observers.

Estosia's gravitational pull is approximately 1.2 times that of Earth, and it experiences a slow rotation, resulting in long periods of daylight and darkness. The planet orbits a binary star system, which influences its climate and geological activity. Research into Estosia is ongoing, with ongoing efforts to decipher K'tharr language and understand the unique ecosystem that thrives under its violet skies.