"Mystery of the Universe's Gamma-Ray Glow Solved" by Calla Cofield, Space.com
February 5, 2015
"We have a very plausible story. We're not 100 percent confident that this is the final answer, but it really constrains what other exotic possibilities could be out there," said Keith Bechtol, a postdoctoral researcher at the University of Chicago and a member of the Fermi collaboration who worked on the analysis.