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. The barrage of plasma could lead to a geomagnetic storm today , according to spaceweather.com.
Related: Ancient solar storm smashed Earth at the wrong part of the sun's cycle — and scientists are concerned Thankfully today's potential storm, predicted to be a G-1 class, will be fairly weak. It may cause minor fluctuations in power grids and impair some satellite functions — including those for mobile devices and GPS systems. It could also cause an aurora to appear as far south as Michigan and Maine.
Astronomers have known since 1775 that solar activity rises and falls in cycles, but recently, the sun has been more active than expected, with nearly double the sunspot appearances predicted by the National Oceanic and Atmospheric Administration.
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