Je cite: en gros, le point d'origine des aurores boréales d'il y a peu
An unusually active sunspot region is now crossing the Sun. The region, labelled AR 4366, is much larger than the Earth and has produced several powerful solar flares over the past ten days.
Image Credit & Copyright: Daniel Korona
Active Sunspot Region 4366 Crosses the Sun
Source: apod.nasa.gov