NASA: major step toward knowing origin of cosmic rays

Recent observations from NASA and Japanese X-ray observatories have helped clarify one of the long-standing mysteries in astronomy – the origin of cosmic rays.

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<p><a href="http://www.physorg.com/news111166810.html">NASA: major step toward knowing origin of cosmic rays</a></p> <p>Recent observations from NASA and Japanese X-ray observatories have helped clarify one of the long-standing mysteries in astronomy – the origin of cosmic rays.</p>