Cosmic Rays Mystery Solved - Sixty Symbols

New observations seem to settle the question of where cosmic rays come from.

Dr Tony Padilla discusses the research. See the paper at: http://arxiv.org/pdf/1302.3307v1.pdf

COMMENT FROM TONY: "My comments at 1.30 were a bit hasty. Cosmic rays do not pass through the earth. Most collide in the upper atmosphere. I was actually thinking of the LHC safety debate. If they exist, mini blackholes produced by cosmic ray collisions on earth would slip straight through because the earth isn't dense enough. But not the protons themselves."

Tony tweets at   / drtonypadilla   (lots of good science news, links and jokes mixed with some over emotional football commentary)

Nasa write-up at: http://www.nasa.gov/home/hqnews/2013/...

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