Erythria

Erythria is a fictional exoplanet located within the Kepler-186 system, approximately 500 light-years from Earth. It is the fifth and outermost planet in the system, orbiting its star within the habitable zone. This positioning suggests that conditions on Erythria might be suitable for the presence of liquid water on its surface, a key ingredient for life as we know it.

The planet is classified as a super-Earth, meaning it is larger than Earth but smaller than Neptune. Its radius is estimated to be about 1.5 times that of Earth, and its mass is thought to be roughly five times greater. This increased mass likely results in a stronger gravitational pull on its surface. Erythria's atmosphere is believed to be denser than Earth's, potentially offering protection from stellar radiation and contributing to a more stable climate.

Observations suggest that Erythria has a rocky composition, similar to Earth's terrestrial planets. Due to its orbital distance, it receives less stellar energy from Kepler-186 than Earth does from the Sun. However, its denser atmosphere could create a greenhouse effect, moderating its temperature. While direct evidence of life has not been found, its location in the habitable zone and its planet type make Erythria a subject of significant interest in the search for extraterrestrial life. Further study of its atmospheric composition and surface conditions is ongoing.