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Aurora Borealis (Northern Lights) is a spectacular phenomenon that occurs in nature. The aurora borealis is also called the northern polar lights, as it is only visible in the sky from the Northern Hemisphere, the chance of visibility increasing with proximity to the North Magnetic Pole, which is currently in the arctic islands of northern Canada. It occurs often in Scandinavia as well. In addition, it is possible to see it during the day (it happens at all times but it is harder to see) and in different areas of the world. In fact, some rare occurances of the aurora borealis have mistaken people to take them for UFOs.
The Aurora Borealis forms at around 60 miles high (around 100 km) which makes the lights visible hundreds of kilometers away. The cause for this phenomenon is electrons hitting air particles, causing them to light up. The colour depends on the altitude:
Green - oxygen, up to 150 miles in altitude
Red - oxygen, above 150 miles in altitude
Blue - nitrogen, up to 60 miles in altitude
Purple/violet - nitrogen, above 60 miles in altitude
There is also the existence of the aurora australis (or the southern lights) which has almost identical features to the aurora borealis and is visible from high southern latitudes in Antarctica, South America and Australia.
The soundtrack is a classical version of Clocks (Made Famous by Coldplay) from Jurgen Johannes & The Orchestral Academy of Los Angeles
This video was made by Laurent Cousineau and can be viewed in 720p and 1080p (HD).