The telescope formally known as GLAST, now called the Fermi Gamma-ray Space Telescope, has released an all-sky image.

NASA has an excellent description of the image (its also where I got the image) which I cannot surpass, so read it.

I remember being at Goddard Space Flight Center, where Fermi was built, when it launched. There was a launch party in a large auditorium where I watched a video feed of the rocket launch surrounded by hundreds of giddy astrophysicists and engineers. It was cool. Plus they had snacks.

Credit: NASA/DOE/Fermi LAT Collaboration: