Ereinas

Ereinas is a fictional planet located in the Kepler-186 star system. It is the fifth and outermost planet discovered orbiting the star Kepler-186, a red dwarf located approximately 500 light-years from Earth. Ereinas is roughly the same size as Earth, with an estimated radius of 1.1 Earth radii. Its orbital period is approximately 130 Earth days.

The planet's position within the habitable zone of Kepler-186 has generated significant interest in its potential for supporting life. The habitable zone is the region around a star where liquid water could exist on a planet's surface. While Ereinas resides within this zone, its atmospheric composition and surface conditions remain largely unknown. Scientists speculate that due to the dimmer nature of its red dwarf star, Ereinas may be tidally locked, meaning one side perpetually faces the star while the other remains in darkness.

Further research and observation are required to determine the actual habitability of Ereinas. Telescopic data has provided estimates of its size and orbital characteristics, but detailed atmospheric analysis and surface mapping are beyond current capabilities. The discovery of Ereinas, along with other planets in the Kepler-186 system, contributes to our understanding of exoplanet diversity and the prevalence of potentially habitable worlds in the galaxy.