fr/spaceweather.com

An active region on the far side of the sun is crackling with solar flares and hurling CMEs into space. Click on the image to view the latest blast on Jan. 14th:

This eruption was nearly as dramatic as another one the day before, and suggests that more eruptions are in the offing.

The explosions are occuring almost directly beneath NASA’s STEREO-B spacecraft. STEREO’s onboard telescope has recorded bright flashes of extreme UV radiation and shadowy shock waves emanating from the blast site (Jan. 13th movie). The telescope has also pinpointed the source: It is located just over the sun’s eastern limb. Solar rotation is turning the region toward Earth, so geoeffective solar activity could commence within days.