22.08.2013, 04:11

Earth-directed CMEs can cause a space weather phenomenon called a geomagnetic storm, which occurs when they funnel energy into Earth's magnetic envelope, the magnetosphere, for an extended period of time. The CME’s magnetic fields peel back the outermost layers of Earth's fields changing their very shape. In the past, geomagnetic storms caused by CMEs of this strength have usually been mild. Magnetic storms can degrade communication signals, cause unexpected electrical surges in power grids, and produce aurora at higher latitudes.
* source : NASA


