Illustration of the Fermi Gamma
ray Space Telescope (FGST) map of the sky with the central band removed
to block out gamma rays originating in the Milky Way. Gamma rays of
different energies are represented by dots of various colors -- red dots
represent arrival locations of very energetic gamma rays, green dots
represent lower energy, and blue dots represent lowest energy. The new
analysis looks for spiral patterns in the distribution...