https://motherboard.vice.com/en_us/article/d3bpzz/scientists-discover-super-earth-six-light-years-barnards-star-b > Scientists have discovered a “Super-Earth” orbiting Barnard’s Star, a red dwarf located just six light years from our solar system. > The exoplanet, called Barnard’s Star b, is the closest world to Earth ever detected in a single star system, and the second closest of all known exoplanets after Proxima b, an Earth-scale world located four light years away in the triple-star Alpha Centauri system. It is at least 3.2 times as massive as Earth and has a year of 233 days and an estimated surface temperature of around -170°C (-274°F).