Aurora Australis

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Astroearth - November 2007

Aurora Australis

November 24th 2007 02:13

Image Courtesy of IPS Radio and Space Services © Commonwealth of Australia 2007

Aurora's are very common especially in the southern parts of Australia.
Called Aurora Australis in the Southern Hemisphere and Aurora Borealis in the northern hemisphere.

Aurora is the name given to light being emitted when the upper atmosphere is bombarded by energetic charged particles emanating from the Sun. The resulting light we see is the same process that operates in a flourescent tube or neon light. Aurora occurs in an oval around the magnetic poles in both hemisphere aurorae can occur at any time day or night depending on atmospheric conditions, aurora are best seen on cloudless evenings in areas with low light pollution.

Live image over Alaska:

image Courtesy NICT Japan

Watching the colours unfold is a wonderful experience, it is like seeing a gigantic light show with many colours form golden red to green, all the primary colours can be seen in various shades depending on the intensity of the aurora. Australian summer is a great time to see an aurora because of the extended daylight hours and increased solar activity the chance of seeing an aurora are high.

Auroras can be seen mainly in Tasmania and the southern states of Australia with occasional sighting in the Northern New South Wales. Aurora Australis is more commonly seen in Australia around the time of maxima in the 11-year cycle in solar sunspot occurrence. The most recent sunspot maximum occurred in 2000.

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Posted By: CarlCan - Category: No Category

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Comments

2 Comments. [ Add A Comment ]

Comment by Mountain Fog

November 24th 2007 13:59

Infognito

I saw a vividly red Aurora as a small child, when living in Adelaide. My father held me in his arms as I was terrified of it, the dancing red curtain in the sky. I drew a picutre of it in school, and have it to this day! The teacher liked it, but my flowers were droopy with sad faces on them!! hehe!!

cheers

fog

P.S. NOW SING OUT LOUD!!
DING DONG THE LIBS ARE DEAD,
WICKED OLD LIBS,
DIRTY OLD LIBS,
DING DONG THE WICKED LIBS ARE DEAD!!!!!!!!!!!!!!!

YIPPPPEEEEE!!!!!!!!!!!!!!!!

Comment by CarlCan

November 26th 2007 01:54

Astroearth

Hi Fog,

I must admit that when I observed an Aurora I was 13 years old and living in southern part of rural NSW It was midsummer around 8 pm and the sky had an eerie hue from then on I was hooked.

As far as the Libs, well that's another story. I have always been a little left of centre in my political views we where in need of a change.

Cheers

Carl

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