A map of the gamma-ray sky, created using four years of data collected by NASA's Fermi satellite. The color coding displays the intensity of the detected gamma radiation (low intensity = blue, medium ... more 
A map of the gamma-ray sky, created using four years of data collected by NASA's Fermi satellite. The color coding displays the intensity of the detected gamma radiation (low intensity = blue, medium intensity = red, high intensity = yellow). T less 
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SPACE.com | Photo By NASA/DOE/Fermi LAT Collaboration/AEI
Thu, Oct 25, 2012 2:33 PM EDT