http://tags.lifehacker.com/assets/base/img/thumbs140x140/io9.com.png http://io9.com/tag/particleaccelerators http://io9.com/tag/particleaccelerators Chinese astronomers observed this supernova, RCW 86, in the year 185 A.D. But it's still pumping out cosmic rays, and a new image shows how supernova remnants like this one are the Milky Way's "super-efficient particle accelerators." [Chandra Observatory]

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