Cosmic rays maintain their mystery
Excerpt from the November 27, 1965 issue of Science News Letter
![illustration of cosmic rays showering Earth](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/11/112815_cc_particles50yago_free.jpg?fit=860%2C460&ssl=1)
SUBATOMIC SHOWERS Earth is perpetually pelted by cosmic rays, which trigger cascading showers of subatomic particles (illustrated) when they hit the atmosphere.
NASA, S. Swordy/University of Chicago