by Patrick Galey Agence France Presse PARIS, France (AFP) — A “super-Earth” has been discovered orbiting the closest single star to our Sun, scientists said Wednesday in a breakthrough that could shine a light on Earth’s nearest planetary neighbours. Astronomers studied Barnard’s Star, a red dwarf just six light years away — practically in our back garden, galactically speaking — and noticed the presence of a “frozen, dimly lit world” at least 3.2 times heavier […]