A high-powered solar flare erupted from the sun last week, causing a major radio blackout in Europe and Asia. The eruption ...

A solar flare is a burst of radiation on the sun, according to NASA. They are the most powerful explosions in the solar system, with the biggest ones having as much energy as a billion hydrogen bombs.

The culprit? A fiery X2.7-class solar flare that erupted from sunspot AR4087 early Tuesday morning (May 14), sending charged particles and plasma hurtling toward Earth. And experts warn ...