Dark matter permeates the Universe, making up about 85% of its matter content. Astronomical and cosmological observations indicate that this elusive form of matter shaped the evolution of the Universe, leaving its imprint on the distribution of galaxies and large-scale cosmic structures. Now Simone Ammazzalorso at the University of Turin in Italy, Daniel Gruen at Stanford University in California, and colleagues have detected a signal that could allow scientists to shed light on the nature of dark matter . Matching observations made by the Dark Energy Survey (DES) and the Fermi Large Area Telescope (LAT), the team found a significant cross correlation between the positions of gravitational lenses, which are thought to trace dark matter, and those of gamma-ray photons, which are potentially emitted when dark matter self-destructs. Although their data indicates that the cross correlation predominantly comes from another class of astrophysical objects, the possibility that it partly arises from dark matter remains open.To read more, click here.