Hlenn

Hlenn is a fictional celestial body featured in the science fiction novel "Children of Time" by Adrian Tchaikovsky. Within the narrative, Hlenn is a planet located in the Kepler-186 system, far from Earth. It is designated as a potential new home for humanity, following the destruction of their original world. The planet is described as having a thin but breathable atmosphere and a varied landscape, featuring oceans, continents, and diverse geological formations.

The core of the plot involving Hlenn revolves around the efforts of the last remnants of humanity to reach and colonize it. They embark on a perilous journey aboard the generation ship "Hasifer," which carries a cryogenically preserved population and a significant portion of Earth's fauna and flora. The journey is long and fraught with challenges, including the ship's aging systems and the psychological toll on the crew.

Upon arrival, the human survivors discover that Hlenn is not uninhabited. The planet is home to an advanced, sentient species of spiders, which have evolved over millennia in isolation. This discovery sets the stage for a complex and often violent interaction between the two species as they vie for control of the planet. The narrative explores themes of evolution, conflict, and the potential for coexistence between vastly different intelligent life forms. Hlenn serves as the primary setting for much of the novel's latter half, showcasing the clash of civilizations and the struggle for survival.