Kepler-186f

Kepler-186f is an exoplanet located about 500 light-years from Earth, orbiting a star similar to our Sun but smaller. It is significant because it is the first confirmed Earth-sized planet found in the habitable zone of its star, meaning it could potentially have liquid water on its surface. Kepler-186f's discovery suggests that planets like Earth may be common in the universe, increasing the possibility of finding life beyond our planet. Its size and location make it an exciting target for studying planetary atmospheres and searching for conditions suitable for life.