Antimatter. It's out there.
April 3, 2013 4:44 PM Subscribe
A number of headlines have proclaimed the detection of "dark matter" today, but Science News has a more measured take. What we do know is that the Alpha Magnetic Spectrometer riding aboard the ISS has detected positrons at high energy. Some theorists suggests that dark matter collisions would generate these positrons, but dark matter annihilation should also produce antiprotons, gamma rays and radio waves, which have not yet been observed. Since dark matter is suspected to account for far more of the universe than ordinary matter, the AMS data is a tantalizing hint of what we might learn.
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