Aurora borealis is almost impossible to be described. It is fantastic and overwhelming.
It is one of the reasons making a journey to the North Pole worthy. Even if you love sunny places, swimming and beaching, you will be very enthusiastic seeing this uncomparable phenomen. Nevertheless, scientifically speaking, it is only ionized gas(plasma).
The reality is overwhelming, you will agree with me. You will experience the magic of North, and the Call of North. Visit some places which are not remoted from the Arctic Circle(Iceland,Lapland etc) to make your own photo of Aurora Borealis.
What do you think of it? You will believe for sure, not to be on Earth anymore!