plánetunni
Plánetunni is a celestial body observed in the Kepler-186 system. It orbits the star Kepler-186f, which is a red dwarf star located approximately 500 light-years from Earth. Plánetunni is notable for being the first exoplanet discovered within the habitable zone of its star. The habitable zone is the region around a star where the temperature is just right for liquid water to exist on the surface of a planet.
The planet is estimated to be roughly 1.1 times the size of Earth. Its discovery, announced in
The Kepler-186 system contains five known planets, with Plánetunni being the outermost. The star, Kepler-186f, is