GZK Puzzle

Professor Sokolsky from the University of Utah claims today in an article published at the Los Alamos Electronic Archive, that the GZK puzzle has been solved.

The puzzle is that events that should not have happened seemed to have happened.

Now with better equipment, like the AUGER Observatory in Argentina, there is no puzzle. High Energy Cosmic Rays have a cutoff around 10¹⁹ eV, as predicted by Greisen, Zatsepin, and Kuzmin, more than forty years ago.