düüminden

Düüminden is a fictional planet located in the Andromeda Galaxy. It is characterized by its dense atmosphere, composed primarily of nitrogen and methane, which gives its sky a perpetual twilight hue. The surface of Düüminden is largely covered by vast, shallow oceans of liquid ammonia, punctuated by scattered archipelagos of crystalline islands. These islands are formed from a unique silicon-based mineral that exhibits a bioluminescent quality.

The dominant life forms on Düüminden are silicon-based, known as the Cryll. These creatures are amorphous and can alter their density, allowing them to navigate both the liquid ammonia oceans and the gaseous atmosphere. They communicate through complex patterns of light emitted by their crystalline bodies. The Cryll are believed to subsist on the energy released from geothermal vents located on the ocean floor.

Düüminden's climate is extremely cold, with average surface temperatures far below the freezing point of water. The planet experiences slow, majestic weather patterns, with ammonia storms that can last for centuries. Its rotational period is exceptionally long, resulting in prolonged periods of dim sunlight followed by equally long periods of darkness. Scientific expeditions to Düüminden are rare due to the extreme environmental conditions and the challenges associated with studying silicon-based life.