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Physics News Update
Number 319 (Story #1), April 29, 1997 by Phillip F. Schewe and Ben Stein

A NEW CELESTIAL SOURCE OF POSITRONS has been identified. Positrons (antielectrons) are routinely made on Earth at several labs (SLAC, LEP, HERA) and in deep space (the galactic center and cosmic rays). The Gamma Ray Observatory (GRO) has now found a new positron source. At a meeting in Williamsburg, VA yesterday, GRO scientists announced the observation of a diffuse fountain of positron-emitting material projecting 3000 light years out of the plane of our galaxy. The researchers are happy to have found a new galactic feature but are puzzled as to why the flare, starting near or at the core of the Milky Way, flows north out of the plane but not south. (See figure at Naval Research Laboratory web site)