... The Quiet Sagittarius A . ... At least that seems to be true for the supermassive black hole at the center of our Milky Way Galaxy . Known as source Sagittarius A* , the Milky Way's black hole is centered in this infrared (red and yellow hues) and X-ray (blue) composite. ... The result explains why the Milky Way's black hole is so quiet, much fainter than might be expected in energetic X-rays. ... Publications with keywords: Sagittarius - black hole . ... Two Black Holes Merge . ...