X Marks the Spot, said the Gamma Ray
A Fermi/LAT study of the ISM using gamma rays finds evidence for missing gas and variations in the CO-to-molecular gas conversion factor.
The first detected signature of dark matter annihilation?
A flurry of recent papers point to detection of a ~130 GeV gamma-ray emission line from near the Galactic center. If real, this could be the first detection of a signature of annihilating dark matter.