Looking up into the night sky one typically sees stars, if one is far enough away from the lights of a big city. In Florida if you are close enough to one of the theme parks you can typically see a light show put on by humans. Kangerlussuaq is one of the few places were, solar storms and clouds permitting, you are able to see a light show put on by nature, the Aurora Borealis.
The Aurora occurs when charged particles of the solar wind hit the world. This occurs typically due to a solar storm at the sun approximately 2 days (time the particles take to travel to the earth) before you see the aurora. Additionally there may be an aurora but if it is too cloudy, you will not see it. Much of the time we were in Greenland it was too cloudy to see the Aurora, but the Tuesday night that we were there it appeared shortly after our dinner. We all bundled up (I think I was wearing about 6 layers or so), took cups of hot tea and found comfortable spots outside to watch the twirling lights dance across the sky. The price of being cold was, to me, worth it to see this marvel of nature before my eyes.
With such marvels of nature in the far north, it is no wonder to me why Santa Claus is based on the top of the world instead of the tropics.
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