At simultaneous press conferences around the world, including Shanghai, astronomers showed people the first picture of a supermassive black hole in the center of our Milky Way galaxy. This result gives an empirical evidence that the object is a black hole and provides valuable clues to understand the behavior of the “giant beast” believed to reside in the center of most galaxies. The photo was taken by the international research team organized by the event horizon telescope (EHT) through a ne...