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Dark Matter Discovery Closer Than Ever With New Cosmic Ray Observations.

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Scientists have found an abundance of highly energetic antimatter particles originating from space that could be a flag marking the existence of dark matter.

If confirmed, the discovery would be the closest scientists have come to success in their search for this elusive, invisible material that is thought to make up much of the universe.

Researchers have been using the Alpha Magnetic Spectrometer mounted on the International Space Station to observe cosmic rays and look for the signatures of dark matter and antimatter. In a forthcoming paper in the journal Physical Review Letters, an international team of researchers describe how they found extra antimatter particles, particularly positrons in the cosmic rays headed toward Earth 6 a possible dark matter signature.

The theory of supersymmetry predicts that two dark matter particles colliding would produce positrons -- the antimatter counterpart of electrons. However, there's also the possibility that the positrons originate from strongly radiating neutron stars called pulsars.

"Over the coming months, AMS will be able to tell us conclusively whether these positrons are a signal for dark matter, or whether they have some other origin," AMS spokesperson Samuel Ting (http://press.web.cern.ch/press-releases/2013/04/ams-experiment-measures-antimatter-excess-space) said in a statement released by CERN.
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Publication:International Business Times - US ed.
Date:Apr 3, 2013
Words:204
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