Recently we learned about the exoplanet Kepler-186f, a potentially earthlike, potentially habitable world only around 500 lightyears away.

The Kepler-186 system is home to Kepler-186f, the first validated Earth-size planet orbiting a distant star in the habitable zone -- a range of distances from a star where liquid water might pool ...

Kepler-186f, slightly larger than Earth, orbits its red dwarf star in the habitable zone, receiving one-third of Earth's solar energy. Proxima Centauri b, Earth's closest exoplanet at over 4 light ...