Interessante kaone, grazie!
GREAT FILAMENT: A vast filament of magnetism is cutting across the sun's southern hemisphere today. Run a finger along the golden-brown line in this extreme UV image from the Solar Dynamics Observatory and your digit will have traveled more than 400,000 km:

A bright 'hot spot' just north of the filament's midpoint is UV radiation from sunspot 1112. The proximity is no coincidence; the filament appears to be rooted in the sunspot below. If the sunspot flares, it could cause the entire structure to erupt.
UPDATE: Yesterday's M3-flare did not destabilize the filament. Stay tuned, however, because sunspot 1112 is growing and more activity is possible in the hours ahead.
Source: spaceweather.com
Ultima modifica di
2di7 il 17/10/2010, 23:10, modificato 1 volta in totale.