One of the biggest sunspot groups in many years has just emerged over the sun's eastern limb. The sunspot's magnetic canopy is crackling with M-class (medium-sized) solar flares and seems poised to launch even stronger X-class eruptions. The sunspot, named AR1339, is not yet directly facing Earth but it will be turning toward our planet in the days ahead. Check http://spaceweather.com
for images of the behemoth and updates.