by APOD Robot » Sat Dec 28, 2013 5:05 am
Alaska Aurora Sequence
Explanation: A remarkably intense auroral band flooded the northern night with
shimmering colors on December 7.
The stunning sequence captured here was made with a camera fixed to a tripod under cold, clear skies near Ester, just outside of Fairbanks, Alaska. Left to right, spanning a period of about 30 minutes, the panels follow changes in the dancing curtains of northern lights extending
to altitudes of over 100 kilometers in a band arcing directly overhead. The panels span 150 degrees vertically, covering about 500 kilometers of aurora laying across the sky from edge to edge. The auroral activity was triggered by a moderate level geomagnetic storm, as a high speed solar wind stream buffeted
planet Earth's magnetosphere.
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[url=http://apod.nasa.gov/apod/ap131228.html][img]http://apod.nasa.gov/apod/calendar/S_131228.jpg[/img] [size=150]Alaska Aurora Sequence[/size][/url]
[b] Explanation: [/b] A remarkably intense auroral band flooded the northern night with [url=http://www.exploratorium.edu/learning_studio/auroras/difcolors.html]shimmering colors[/url] on December 7. [url=http://twanight.org/newTWAN/photos.asp?ID=3004399]The stunning sequence[/url] captured here was made with a camera fixed to a tripod under cold, clear skies near Ester, just outside of Fairbanks, Alaska. Left to right, spanning a period of about 30 minutes, the panels follow changes in the dancing curtains of northern lights extending [url=http://odin.gi.alaska.edu/FAQ/#altitude]to altitudes[/url] of over 100 kilometers in a band arcing directly overhead. The panels span 150 degrees vertically, covering about 500 kilometers of aurora laying across the sky from edge to edge. The auroral activity was triggered by a moderate level geomagnetic storm, as a high speed solar wind stream buffeted [url=http://apod.nasa.gov/apod/ap121011.html]planet Earth's[/url] magnetosphere.
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