Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: Joe Maher/Getty Images Elizabeth Hurley and Billy Ray Cyrus plan to turn headlines into business, a source claims.

Add Yahoo as a preferred source to see more of our stories on Google. (Photo by Yui Mok/PA Images via Getty Images) Elizabeth Hurley and Billy Ray Cyrus have been in the news due to their relationship ...

Cosmic rays, high-energy particles that travel through space, have puzzled scientists for decades. One particular feature of their energy spectrum—the “knee”—has long remained a mystery. Recent ...

For decades, a sharp kink in the energy spectrum of particles raining down from space has taunted astrophysicists, hinting at powerful engines in our Galaxy but refusing to reveal their identity. Now ...