18 febrero 2015
On Oct. 8, 2013, an explosion on the sun’s surface sent a supersonic blast wave of solar wind out into space. This shockwave tore past Mercury and Venus, blitzing by the moon before streaming toward Earth. The shockwave struck a massive blow to the Earth’s magnetic field, setting off a magnetized sound pulse around the planet.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/qIxEDLPIxTI/150218141313.htm
