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[–]magnora7 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

Here's a map of the odds of seeing an aurora in different places in the northern hemisphere: https://c2.staticflickr.com/4/3165/2849896588_fe971014a7_z.jpg?zz=1

It happens like this because of the magnetic field of the earth, which guides charged particles to group in certain areas (the poles, basically) as they fall to earth. Weird how it makes that ring shape though, never noticed that before. Interesting stuff imo