‘Years ago, when solar physicists first witnessed a towering wave of hot plasma racing along the sun's surface, they doubted their senses. The scale of the thing was staggering. It rose up higher than Earth itself and rippled out from a central point in a circular pattern millions of kilometers in circumference. Skeptical observers suggested it might be a shadow of some kind—a trick of the eye—but surely not a real wave.

“Now we know” says Joe Gurman of the Solar Physics Lab at the Goddard Space Flight Center. “Solar tsunamis are real.” ‘ (NASA -Mystery of the Solar Tsunami–Solved)