Astronomers May Have Just Discovered a Dozen Black Holes in the Center of Our Galaxy

Astronomers first noticed an enigmatic object, dubbed "Sagittarius A*", at the very heart of our Milky Way galaxy in the 1960s--the earliest days of radio and infrared astronomy. But just how extraordinary this source was only became clear three decades later, when it was identified as a supermassive black hole with the mass of a […]