Harvard-Smithsonian Center for Astrophysics
Ghostly Gamma-ray Beams Blast from Milky Way's Center
29 May 2012, 14:01 UTC
May 29, 2012: As galaxies go, our Milky Way is pretty quiet. Active galaxies have cores that glow brightly, powered by supermassive black holes swallowing material, and often spit twin jets in opposite directions.
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