In Search of Antimatter Galaxies - NASA Science
http://science.nasa.gov/science-news/science-at-nasa/2009/14aug_ams/
Vast Cloud of Antimatter Traced to Binary Stars - NASA 01.09.08
"The antimatter cloud was discovered in the 1970s by gamma-ray detectors flown on balloons. "
http://www.nasa.gov/centers/goddard/news/topstory/2007/antimatter_binary.html
Integral discovers the galaxy’s antimatter cloud is lopsided- ESA Portal
9 January 2008
The shape of the mysterious cloud of antimatter in the central regions of the Milky Way has been revealed by ESA’s orbiting gamma-ray observatory Integral. The unexpectedly lopsided shape is a new clue to the origin of the antimatter.
http://www.esa.int/esaCP/SEMKTX2MDAF_index_0.html
