Aeg-ajalt toimuvad Päikesel metsikud plahvatused - päikesepursked või ainepursked kroonist. Mõlemaga käib kaasas tohutu energiahulk ja Päikesest eemale suunatud osakeste voog.
Coronal Mass Ejections (CMEs) are large expulsions of plasma and magnetic field from the Sun’s corona. They can eject billions of tons of coronal material and carry an embedded magnetic field (frozen in flux) that is stronger than the background solar wind interplanetary magnetic field (IMF) strength. CMEs travel outward from the Sun at speeds ranging from slower than 250 kilometers per second (km/s) to as fast as near 3000 km/s.
