Showing posts with label aurora borealis. Show all posts
Showing posts with label aurora borealis. Show all posts

The Magic in Auroras

One of the most awe-inspiring natural phenomena on earth is the light display of aurora in the polar regions. Aurora borealis (the northern lights) is highly visible in Iceland, Norway, Greenland, Alaska or any other northern-latitude country, and aurora australis (the southern lights) can be seen from high southern latitudes in Antarctica, South America, or Australasia.

The collisions between the solar wind particles streaming from the sun and the charged particles from the earth’s magnetic field cause energy releases in the form of auroras to appear in large rings around the poles.

Although the appearances of auroras are all year round, they are only visible closer to the poles due to the longer periods of darkness and the earth’s magnetic field. The aurora could appear either as a ghastly glow in the night sky or as "curtains" that unfold in the east-west direction.

The range of color light emissions depends on the composition, the density of the atmosphere and the altitude of the aurora. Besides green, the most common color, you can also see pink, red, yellow, blue and even purple.

Auroras are more frequent and brighter due to the intensity of the solar wind when the sunspot activities and coronal flares are at their maximum. Nearing its 11th year solar cycle, the sun is about to reach its solar maximum in 2012.

Let this beautiful magic of nature inspire you as it has done so to so many photographers, artists and writers for years! Make it a "Must See" in 2012!



 
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