The aurora borealis may be visible in the U.S. northern tier this week


A strong geomagnetic storm will interfere with the earth’s magnetic field — making the Northern Lights visible in more areas. The storm could mess with satellites, GPS tracking and the power grid.

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Category 5 hurricanes are rare in the U.S. There have only been 4 in its history

Such massive storms are fairly rare, and it’s even more rare for them to make …