Cosmic rays maintain their mystery
Excerpt from the November 27, 1965 issue of Science News Letter
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
Major energy cosmic? — Previous ideas on how long and how far [cosmic rays] travel in interstellar space were probably incorrect.