About this world
Kepler-186 f is an Earth-sized planet orbiting Kepler-186, a cool red dwarf (type M1) 579 light-years from Earth. It is about 1.2 times the size of Earth. It completes an orbit every 130 days at 0.43 AU from its star.
Its equilibrium temperature is about 177 K (−96 °C), which places it in the conservative habitable zone: the band where liquid water could exist on a rocky surface. By the "cosmic shoreline", it has likely held on to an atmosphere.
It was discovered in 2014 by transit with Kepler. A planet crosses its star and dims it by a tiny, periodic fraction. Kepler-186 has 5 known planets; the others are Kepler-186 b, Kepler-186 c, Kepler-186 d and Kepler-186 e.