by Mariëtte Le Roux Agence France Presse PARIS, France (AFP) — A long time ago, in a galaxy far away, a supergiant red star ended its life in a spectacular explosion known as a supernova. The light from that event took 160 million years to reach Earth where, in a stroke of luck, robot telescopes scanning the night sky happened upon it on October 6, 2013. On Monday, astronomers said the chance discovery allowed them […]