Fermi at 2: still rocking the high-energy sky

Bad Astronomy
By Phil Plait
Sep 15, 2011 3:30 PMNov 20, 2019 4:19 AM

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Astronomers working with Fermi -- a mission that is mapping the sky in gamma rays -- have just released a new catalog of objects detected by the spacecraft. They've re-analyzed two years worth of data and have found nearly 2000 objects blasting out this super-high-energy form of light. Here is the all-sky map they made from that data:

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