Some special auroras can only be seen with special cameras, not just with naked eye. These auroras are called subvisal and they appear all over the world. Certain colors of auroras are more easily seen but some require the special cameras. The human eye does not collect light at the speed necessary to see all of the different colors in the spectrum Subvisal auroras are very common in Alaska which is where the picture above comes from. Thousands of stars are visible and the galaxy is full of wonders like these.
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