A planet described as the ‘single most promising exoplanet discovered to date in terms of habitability’ and a ‘natural location where our civilization could aspire to move to’, has been found orbiting the closest star to our Sun. This artist’s impression shows Proxima b orbiting Proxima Centauri, which at only 4.23 light-years is the closest star to our Solar System. The double star Alpha Centauri AB also appears in the image between the...