Science: Clue to Atom Smashing

Each person on earth unwittingly encounters a shower of cosmic rays about once a minute, whether indoors or out. Each shower covers two or three acres and contains from 100,000 to 1,000,000 high-speed electrical particles. Even airraid shelters, are no protection—the rays penetrate steel and concrete. But no protection is necessary. The rays are harmless.

Last week Dr. Pierre Auger, who discovered these showers at his Paris laboratory in 1938, gave a new theory of their origin to the American Physical Society, meeting at the University of Chicago. They do not come from outer space as electrons: that would require a...

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