Search for dark matter: Experiment measures antimatter excess in cosmic ray flux

Search for dark matter: Experiment measures antimatter excess in cosmic ray flux: The international team running the Alpha Magnetic Spectrometer (AMS) today announced the first results in its search for dark matter. They report the observation of an excess of positrons in the cosmic ray flux. The results are consistent with the positrons originating from the annihilation of dark matter particles in space, but not yet sufficiently conclusive to rule out other explanations.