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CfA Press Releases Weekly Science Updates 2013 2012 2011 2010 2009 2008 2007 2006 Other News Features All News	Weekly Science Update Giant Gamma Ray Bubbles in our Galaxy An artist's conception of the two giant bubbles of gamma ray emission discovered in our Milky Way galaxy. Credit: NASA/GSFC High Resolution Image (jpg) Low Resolution Image (jpg) Back to Science Update
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