Shock wave from sun has opened up a crack in Earth's magnetic field, and it could trigger a geomagnetic storm
A mysterious shock wave in a gust of solar wind has sent a barrage of high-speed material smashing into Earth's magnetic field, opening up a crack in the magnetosphere.
![Shock wave from sun has opened up a crack in Earth's magnetic field, and it could trigger a geomagnetic storm](http://cdn.mos.cms.futurecdn.net/sNc22kCzma9BLsVMrA9WRg.gif?#)