Sellid

Sellid is a fictional planet located in the Cygnus X-1 system, as depicted in the science fiction novel "The Crimson Comet" by Anya Sharma. The planet is characterized by its striking red hue, attributed to high concentrations of iron oxide in its soil and atmosphere. Sellid orbits a binary star system, resulting in a complex and often erratic day-night cycle. Its environment is predominantly arid, with vast deserts punctuated by deep canyons and towering rock formations.

The atmosphere of Sellid is thin and contains a significant amount of methane, making it toxic to most known life forms without specialized breathing apparatus. Despite these harsh conditions, the novel suggests the existence of microbial life adapted to the planet's extreme environment, thriving near subterranean water sources. These organisms are believed to be chemoautotrophs, deriving energy from chemical reactions rather than sunlight.

Historically, Sellid has been of interest to interstellar prospectors due to rumors of rare mineral deposits. However, the planet's inhospitable nature and the challenging orbital mechanics of its binary suns have made extensive exploration and exploitation difficult. The narrative of "The Crimson Comet" involves a small research outpost established on Sellid, which becomes the focal point for uncovering ancient extraterrestrial artifacts. The planet's isolation and unique geological features contribute to its enigmatic reputation within the novel's universe.