A remarkable sunspot is crossing the face of the Sun. The large active
region stretches 15 Earth-diameters from end-to-end and poses a threat for
powerful flares. Indeed, on July 15th, twisted magnetic fields above the
spot erupted. The explosion sparked an X-class solar flare and hurled a
coronal mass ejection into space. As a result, sky watchers on Earth
might spot auroras on Tuesday or Wednesday night. Visit spaceweather.com
for more information and updates.
BANG!
http://www.spaceweather.com/images2002/15jul02/cme_c3_big.gif