Celcéva
Celcéva is a fictional planet located in the Kepler-186 star system, approximately 500 light-years from Earth. It is the fifth and outermost known planet in its system, orbiting a red dwarf star. Celcéva is notable for being within the habitable zone of its star, meaning it could potentially possess liquid water on its surface.
The planet is estimated to be roughly Earth-sized, with a radius approximately 1.1 times that of Earth.
Scientific speculation suggests that life, if it exists on Celcéva, might be concentrated in the twilight zone