A syllabus in cosmic rays

What have scientists learned in five years of studying cosmic rays with the Alpha Magnetic Spectrometer experiment? On May 19, 2011, astronauts used a remote-controlled robotic arm to attach a nearly 17,000-pound payload to the side of the International Space Station. That payload was the Alpha Magnetic Spectrometer, or AMS-02, an international experiment sponsored by the US Department of Energy and NASA. AMS was designed to detect cosmic rays, highly energetic particles and nuclei that bombard ...