NASA's Solar Dynamics Observatory and other solar observatories have captured video of a spectacular solar flare that erupted from the sun's surface on Tuesday.
The blast was rated a (moderate) M-2 flare, but only a (minor) S-1 class radiation storm.
The solar particles and magnetic waves hurled across the solar system by the blast - called a coronal mass ejection - are expected to give Earth only a "glancing blow," according to scientists at the NASA Goddard Space Flight Center in Greenbelt. Even so, observers in northern latitudes should be watching for auroral displays tonight and tomorrow night.
Here's how it looked: