Heluvia

Heluvia is a fictional planet featured in the science fiction novel "The Expanse" by James S. A. Corey. It is located in the outer reaches of the Solar System, beyond the orbit of Neptune, and is known for its unique and diverse ecosystems. The planet is home to a variety of alien species, including the Heluvians, a humanoid race with a distinct culture and technology. Heluvia is also notable for its rich mineral deposits, which have made it a target for mining operations by various space-faring factions. The planet's atmosphere is composed primarily of nitrogen and oxygen, with trace amounts of other gases, and its surface is characterized by vast oceans and towering mountains. Heluvia's climate is relatively mild, with temperatures ranging from -50°C to 50°C, and its day is approximately 18 Earth hours long. The planet's most distinctive feature is its bioluminescent flora, which illuminates the landscape at night and creates a mesmerizing spectacle for visitors. Despite its beauty, Heluvia remains largely unexplored and mysterious, with much of its secrets yet to be uncovered.