Ghostly Gamma-ray Beams
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Ghostly Gamma-ray Beams

June 8, 2012
This artist's conception shows an edge-on view of the Milky Way galaxy. Newly discovered gamma-ray jets (pink) extend for 27,000 light-years above and below the galactic plane, and are tilted at an angle of 15 degrees. Previously known gamma-ray bubbles are shown in purple. The bubbles and jets suggest that our galactic center was much more active in the past than it is today.

Credit: David A. Aguilar (CfA)

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