Weather.com - 3/18/13
The sun eruption sent a wave of solar particles streaking toward Earth at about 900 miles per second, according to observations by NASA and European spacecraft. That is the equivalent of a mind-boggling about 3.2 million miles per hour.
The sun is currently in an active phase of its 11-year solar weather cycle and is expected to reach its peak activity in 2013.
For more details click: northern lights
