The "Oh My God" Particle
During the early 1990's American particle physicists were lobbying for a Superconducting Supercollider. The SSC would accelerate protons to energies of 20 TeV in search of the legendary Higgs Boson, which Leon Lederer dubbed "The God Particle." Why go to the trouble of making something when you can steal it? At the same time the University of Utah was operating a cosmic ray detector called Fly's Eye. On the night of October 15, 1991 it detected a proton with energy of 320 MILLION TeV. This was dubbed the "Oh My God" particle.
This energy was far higher than any particle thought to exist, exceeding the Greisen-Kuzmin-Zatsepin (GZK) limit. It appeared to conflict with Special Relativity. (Where have we heard that before?) Since then over 100 such particles have been discovered, coming from no particular region of Space. Fly's Eye is operated by a collaboration including University of Adelaide.
Prediction: There is no such thing as a GZK limit. Because the speed of light was once much higher, distant cosmic rays can almost any energy.