Arivar
Arivar is a fictional celestial body featured in the science fiction novel "Starfall." It is depicted as a rogue planet, meaning it does not orbit a star and drifts through interstellar space. Its origin is attributed to a cataclysmic event in its home star system, which ejected it from its gravitational pull. Arivar is characterized by its extreme cold and the absence of any natural light source. Despite its inhospitable nature, the novel suggests that life, adapted to extreme conditions, may exist on Arivar, perhaps utilizing geothermal energy or chemosynthesis. The planet's immense size and gravitational influence make it a significant obstacle or potential resource for interstellar travelers within the narrative. Its discovery and exploration drive a portion of the plot, highlighting the challenges of surviving in the vast emptiness of space. The scientific community in the novel debates the potential for Arivar to harbor unique geological formations and exotic matter due to its unique formation and journey through the galaxy.