Oh My God! It Came from a Black Hole!

According to this Physics World article, astronomers have finally found the source of ultra-high-energy cosmic rays (UHECR), particles from outer space that have stunningly high energies. It turns out that these particles, also known as Oh-My-God particle, came from black holes.

The article goes,

a team of researchers has used the Pierre Auger Cosmic Ray Observatory in Argentina to find the first compelling evidence that UHECRs do indeed come from nearby AGNs [active galactic nuclei]

Apparently it was done by looking at directions from which these particles came from, and the researchers found that all of them arrived from known AGNs. However, the processes which these particles turn from normal particles to, erm, Oh-My-Gods, are still unknown. It also doesn't explain why these particles have energies that exceed the limits predicted by theory.

But at least, astronomers now know where to look.