Viallisena

Viallisena is a fictional planet located in the Andromeda Galaxy, approximately 2.537 million light-years from Earth. It is the third planet orbiting the star Xylos, a yellow dwarf star similar in size and temperature to our Sun. Viallisena possesses a breathable atmosphere rich in oxygen and nitrogen, with trace amounts of other gases. Its surface is predominantly covered by vast, interconnected oceans of liquid methane, interspersed with large continental landmasses.

The climate of Viallisena is characterized by extreme cold, with average temperatures hovering around -180 degrees Celsius. Despite these frigid conditions, life has adapted and thrived. The dominant lifeforms are silicon-based organisms that can withstand the low temperatures and utilize methane as a primary energy source. These organisms range from microscopic extremophiles to complex, sessile flora that resemble crystalline structures and slow-moving fauna adapted to the dense methane oceans.

Viallisena has a thin but stable ring system composed of ice and rock particles. The planet has two small moons, each with a diameter of less than 100 kilometers. Due to its extreme environment, direct human exploration or colonization of Viallisena is currently considered highly challenging, though scientific interest remains in its unique geological and biological characteristics. Research missions primarily rely on remote sensing and automated probes to gather data about this distant world. The origin of the name "Viallisena" is unknown, as it is a designation given by hypothetical interstellar explorers.