“Yesterday, there was one on the Sun.
“It formed when a filament of magnetism lifted off from the southern hemisphere.
“The erupting filament split the Sun’s atmosphere, carving out the canyon as it ascended.
“The glowing walls remained intact for more than six hours after the explosion.”
The debris trailing from the blast was photographed by NASA’s STEREO-A spacecraft and the Solar and Heliospheric Observatory (SOHO).