Kailos

Kailos is a fictional planet featured in the science fiction novel "The Echo Worlds" by author Brandon Sanderson. It is a world of immense geological diversity, characterized by vast crystalline plains and towering, mineral-rich mountains. The planet's atmosphere is thin but breathable for native lifeforms, and its skies are often filled with swirling nebulae due to its proximity to several star systems.

The dominant sentient species on Kailos are known as the K'tharr. These beings are adapted to the planet's harsh environment, possessing a silicon-based biology that allows them to thrive in conditions that would be toxic to carbon-based life. The K'tharr have a deeply ingrained connection to the planet's geology, viewing the crystalline structures as sacred and integral to their existence. Their society is structured around communal living and a profound respect for natural resources.

Kailos is also home to a unique ecosystem of flora and fauna that have evolved to utilize the planet's mineral wealth. Luminescent fungi light the subterranean caverns, and crystalline predators roam the plains. The planet's unusual geological composition makes it a target for off-world mining operations, leading to potential conflicts with the K'tharr and their dedication to preserving their homeworld. The Echo Worlds series explores these interactions and the broader implications of interspecies diplomacy and resource exploitation.