Publiée le 4 juil. 2012 par Skyywatcher88
CHANCE OF X-FLARES: The chance of an X-flare today is increasing as sunspot AR1515 develops a 'beta-gamma-delta' magnetic field that harbors energy for the most powerful explosions. The sunspot itself is huge, stretching more than 100,000 km (8 Earth-diameters) from end to end.