Derek Simmel

NASA's Goddard Space Flight Center

For the first time, scientists have discovered the source of a vanishingly tiny particle called a neutrino that came from outside the Milky Way, with the help of the Pittsburgh Supercomputing Center.

The center's powerful computers helped trace the particle's origin to the collapse of a supermassive black hole nearly 4 billion light years away.

About 100 trillion neutrinos pass through your body every second. They're invisible to the eye, but when they react with water molecules at a high speed, they eminate a bluish light.