SPACE.com: "Source of Mysterious Antimatter Found"
http://news.yahoo.com/s/space/20080111/sc_space/sourceofmysteriousantimatterfound [Broken]Antimatter, which annihilates matter upon contact, seems to be rare in the universe. Still, for decades, scientists had clues that a vast cloud of antimatter lurked in space, but they did not know where it came from.
The mysterious source of this antimatter has now been discovered — stars getting ripped apart by neutron stars and black holes.
"Simple estimates suggest that about half and possibly all the antimatter is coming from X-ray binaries," said researcher Georg Weidenspointner of the Max Planck Institute for Extraterrestrial Physics in Germany.
Weidenspointner, Skinner and their colleagues, detailed their findings in the Jan. 10 issue of the journal Nature.
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