Cydtanklä

Cydtanklä is a fictional planet located in the Andromeda galaxy, approximately 2.537 million light-years from Earth. It is known for its unique geological formations and a distinctive bioluminescent flora that illuminates its surface during the planet's long nights. The planet orbits a binary star system, resulting in complex and often unpredictable seasonal cycles.

The dominant species on Cydtanklä are the Lumina, sentient beings whose physiology is adapted to the planet's low-light conditions. They possess a complex societal structure centered around communal energy harvesting from the native flora. Their technology, while not based on traditional metallurgy or electronics, is highly advanced, focusing on bio-engineering and energy manipulation.

Cydtanklä's atmosphere is rich in nitrogen and a unique, unclassified noble gas, which contributes to the visual phenomena observed on the planet. Water exists in a supercooled liquid state due to the planet's atmospheric pressure and temperature, often forming crystalline structures rather than conventional bodies of water. Scientific expeditions from Earth have encountered significant challenges in studying Cydtanklä due to the extreme environmental conditions and the Lumina's cautious approach to outsiders. Research efforts are ongoing, focusing on understanding the planet's ecosystem and the Lumina's unique bio-technological advancements.