FILE - In this July 25, 2012 file picture Director general of CERN Rolf-Dieter Heuer, left, Nobel laureate and AMS spokesperson Samuel C.C. Ting, right, and Mark Kelly, NASA astronaut and commander of mission STS-134, center, brief the media at the Alpha Magnetic Spectrometer (AMS) Payload Operations and Command Center (POCC) at the European Organization for Nuclear Research (CERN) in Meyrin near Geneva, Switzerland. A US $2 billion experiment on the International Space Station is on the verge of explaining one of the more mysterious building blocks of the universe: The dark matter that helps hold the cosmos together. An international team of scientists says the cosmic ray detector has found the first hint of dark matter, which has never yet been directly observed. The team said Wednesday its first results from the Alpha Magnetic Spectrometer, flown into space two years ago, show evidence of a new physics phenomena that could be the strange and unknown matter. Nobel-winning physicist Samuel Ting, who leads the team at the European particle physics laboratory near Geneva, says he expects a more conclusive answer within months. The findings are based on an excess of positrons positively charged subatomic particles. (AP Photo/Keystone/Martial Trezzini,File)

Associated Press
FILE - In this July 25, 2012  file picture Director general of CERN Rolf-Dieter Heuer, left, Nobel laureate and AMS spokesperson Samuel C.C. Ting, right, and Mark Kelly, NASA astronaut and commander of mission STS-134, center, brief the media at the Alpha Magnetic Spectrometer (AMS) Payload Operations and Command Center (POCC) at the European Organization for Nuclear Research (CERN) in Meyrin near Geneva, Switzerland. A US $2 billion experiment on the International Space Station is on the verge of explaining one of the more mysterious building blocks of the universe: The dark matter that helps hold the cosmos together.   An international team of scientists says the cosmic ray detector has found the first hint of dark matter, which has never yet been directly observed. The team said Wednesday its first results from the Alpha Magnetic Spectrometer, flown into space two years ago, show evidence of a new physics phenomena that could be the strange and unknown matter. Nobel-winning physicist Samuel Ting, who leads the team at the European particle physics laboratory near Geneva, says he expects a more conclusive answer within months. The findings are based on an excess of positrons positively charged subatomic particles.  (AP Photo/Keystone/Martial Trezzini,File)
FILE - In this July 25, 2012 file picture Director general of CERN Rolf-Dieter Heuer, left, Nobel laureate and AMS spokesperson Samuel C.C. Ting, right, and Mark Kelly, NASA astronaut and commander of mission STS-134, center, brief the media at the Alpha Magnetic Spectrometer (AMS) Payload Operations and Command Center (POCC) at the European Organization for Nuclear Research (CERN) in Meyrin near Geneva, Switzerland. A US $2 billion experiment on the International Space Station is on the verge of explaining one of the more mysterious building blocks of the universe: The dark matter that helps hold the cosmos together. An international team of scientists says the cosmic ray detector has found the first hint of dark matter, which has never yet been directly observed. The team said Wednesday its first results from the Alpha Magnetic Spectrometer, flown into space two years ago, show evidence of a new physics phenomena that could be the strange and unknown matter. Nobel-winning physicist Samuel Ting, who leads the team at the European particle physics laboratory near Geneva, says he expects a more conclusive answer within months. The findings are based on an excess of positrons positively charged subatomic particles. (AP Photo/Keystone/Martial Trezzini,File)
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