A Large Tsunami Shock Wave on the Sun . ... During 2006, a large solar flare from an Earth-sized sunspot produced a tsunami -type shock wave that was spectacular even for the Sun. ... The resulting shock wave , known technically as a Moreton wave , compressed and heated up gasses including hydrogen in the photosphere of the Sun, causing a momentarily brighter glow. ... The solar tsunami spread at nearly one million kilometers per hour, and circled the entire Sun in a matter of minutes. ...