... Credit: X-ray - NASA / CXC / Q. Daniel Wang (UMASS) et al. ... At least that seems to be true for the supermassive black hole at the center of our Milky Way Galaxy . ... Based on data from an extensive campaign of observations by the orbiting Chandra X-ray telescope, the diffuse emission surrounding the black hole is seen in the close-up inset, the inset field spanning about 1/2 light-year across the galactic center some 26,000 light-years away. ... U. Based on Astronomy Picture Of the Day ...