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Friday 12 September 2014

Aurora season begins, NLC season ends

Space Weather News for Aug. 31, 2014
http://spaceweather.com

Aurora season is now fully underway around the Arctic circle. With
the end of northern summer approaching, dancing green lights are
beaming through the deepening polar twilight on a regular basis.
Unlike lower latitudes, the Arctic does not require a full-fledged
geomagnetic storm for aurora sightings. Check the latest images on
the front page of http://spaceweather.com

Meanwhile, another polar phenomenon is on the wane: noctilucent clouds
(NLCs). Data from NASA's AIM spacecraft suggest that the northern
summer season for NLCs ended on or about August 26th. The
"noctilucent daisy" shown on http://spaceweather.com will probably
remain blank until November, when NLC activity shifts to the southern
hemisphere. NLCs are a summertime phenomenon and they switch back and
forth between the hemispheres accordingly. Stay tuned for more
electric blue ... in a few months.

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Good Clear Skies
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Astrocomet
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Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and
also a friend of Kessingland Beach (Watchman)
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Profile: http://www.google.com/profiles/astrocomera
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Lyra Website: https://sites.google.com/site/lyrasociety/
--
Real Astronomer and head of the Comet section for LYRA (Lowestoft and
Great Yarmouth Regional Astronomers) also head of K.A.G (Kessingland
Astronomy Group) and Navigator (Astrogator) of the Stars (Fieldwork)

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