Best-Ever Map of High-Energy Sky Unveiled (Video)

Scientists used more than six years' worth of data collected by NASA's Fermi Gamma-ray Space Telescope to construct an incredibly detailed map of gamma-ray light, which can be more than a trillion times more energetic than visible light. This map reveals hundreds of sources of such light throughout the universe, from dead stars colliding within the Milky Way to distant galaxies that sport jets from supermassive black holes, mission team members said. "An exciting aspect of this catalog is that w