Calton Hill crowded with spectators, man captures stunning northern lights on smartphone, under ... [ ] aurora borealis during geomagnetic storm in Edinburgh, UK

If the Northern Lights — also known as the aurora borealis — do become visible from the U.S. this weekend, many of the finest images will be taken using smartphone cameras.

So how do you take a photo of the Northern Lights with your phone? Greens, reds and even blues dancing across the........

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