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	<title>Comments on: Aurora Borealis</title>
	<link>http://www.metafilter.com/36847/Aurora-Borealis/</link>
	<description>Comments on MetaFilter post Aurora Borealis</description>
	<pubDate>Tue, 09 Nov 2004 10:47:48 -0800</pubDate>
	<lastBuildDate>Tue, 09 Nov 2004 10:47:48 -0800</lastBuildDate>
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	<item>
		<title>Aurora Borealis</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis</link>	
		<description>Last night&apos;s aurora borealis was seen in, among other places, &lt;a href=&quot;http://www.idahostatesman.com/apps/pbcs.dll/article?AID=/20041109/NEWS01/411090343/1002/NEWS03&quot;&gt;Idaho,&lt;/a&gt; &lt;a href=&quot;http://www.ljworld.com/section/citynews/story/187176&quot;&gt;Kansas,&lt;/a&gt; &lt;a href=&quot;http://www.lacrossetribune.com/articles/2004/11/09/news/00lead.txt&quot;&gt;Michigan,&lt;/a&gt; &lt;a href=&quot;http://www.firstcoastnews.com/weather/news-article.aspx?storyid=27293&quot;&gt;Minnesota,&lt;/a&gt; &lt;a href=&quot;http://www.missoulian.com/articles/2004/11/09/news/top/news01.txt&quot;&gt;Montana,&lt;/a&gt;  
&lt;a href=&quot;http://www.theindependent.com/stories/110904/new_lights11.shtml&quot;&gt;Nebraska,&lt;/a&gt; &lt;a href=&quot;http://www.thechamplainchannel.com/weather/3898721/detail.html&quot;&gt;New York,&lt;/a&gt; &lt;a href=&quot;http://www.dailypress.com/news/dp-12286sy0nov09,0,7114222.story?coll=dp-headlines-topnews&quot;&gt;Virginia,&lt;/a&gt; and &lt;a href=&quot;http://www.wisinfo.com/postcrescent/news/archive/local_18538975.shtml&quot;&gt;Wisconsin.&lt;/a&gt;  Recent sightings are reported &lt;a href=&quot;http://www.spacew.com/www/auroras.html&quot;&gt;here,&lt;/a&gt; and lots of charts and graphs that I don&apos;t understand are &lt;a href=&quot;http://sec.noaa.gov/pmap/&quot;&gt;here&lt;/a&gt; courtesy of the government.</description>
		<guid isPermaLink="false">post:www.metafilter.com,2004:site.36847</guid>
		<pubDate>Tue, 09 Nov 2004 10:42:10 -0800</pubDate>
		<dc:creator>PrinceValium</dc:creator>		<category>aurora</category>		<category>borealis</category>		<category>auroraborealis</category>
	</item>	<item>
		<title>By: MrMoonPie</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766279</link>	
		<description>AskMetaFilterFilter--is there a (DC) Metro-accessible spot that I could try to see the lights from tonight?</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766279</guid>
		<pubDate>Tue, 09 Nov 2004 10:47:48 -0800</pubDate>
		<dc:creator>MrMoonPie</dc:creator>
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		<title>By: DevilsAdvocate</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766301</link>	
		<description>&lt;a href=&quot;http://www.aurorachasers.com/&quot;&gt;Aurorachasers.com&lt;/a&gt; provides a &lt;a href=&quot;http://www.aurorachasers.com/Adec/Subscribe/index_html&quot;&gt;free service&lt;/a&gt; which can send you alerts when the &lt;a href=&quot;http://www.aurorachasers.com/FAQ/index_html#G5&quot;&gt;predicted Kp index&lt;/a&gt; is sufficiently high that aurorae are likely to be visible where you are.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766301</guid>
		<pubDate>Tue, 09 Nov 2004 11:03:37 -0800</pubDate>
		<dc:creator>DevilsAdvocate</dc:creator>
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		<title>By: orelius</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766314</link>	
		<description>also &lt;a href=&quot;http://www.chicagotribune.com/news/local/chi-0411080076nov08,1,474589.column&quot;&gt;Chicago&lt;/a&gt; 
(chicago tribune link, click &lt;a href=&quot;http://www.bugmenot.com&quot;&gt;here&lt;/a&gt; for u/p.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766314</guid>
		<pubDate>Tue, 09 Nov 2004 11:15:45 -0800</pubDate>
		<dc:creator>orelius</dc:creator>
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		<title>By: eriko</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766325</link>	
		<description>I was flying PDX-ORD-STL on a late flight, and it may have rated as the coolest flight I&apos;ve ever taken. First, Mts. Adams, Rainier and St. Helens, then, Aurora all the way.

When I finally got home (around 11:30PM CST -- ORD was delayed by winds forcing a bad runway config) I went to my car, and realized that I could still see the Aurora -- by looking north, over the incredibly brightly lit terminal and ramp.

Wasn&apos;t the best aurora that I saw -- that was this year, in the Keeweenaw on the UP of Michigan -- where I spent several hours looking *south* at the northern lights.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766325</guid>
		<pubDate>Tue, 09 Nov 2004 11:29:52 -0800</pubDate>
		<dc:creator>eriko</dc:creator>
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		<title>By: y2karl</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766334</link>	
		<description>&lt;em&gt;Last night&apos;s aurora borealis was seen in, among other places...&lt;/em&gt;

Um, for the record, that was &lt;strong&gt;the night before last&lt;/strong&gt;--not last night.

I know, because&lt;a href=&quot;http://www.metafilter.com/mefi/36818#765492&quot;&gt; I saw them&lt;/a&gt;. And &lt;a href=&quot;http://www.spaceweather.com/&quot;&gt;Spaceweather.com &lt;/a&gt;agrees:

&lt;em&gt;Sky watchers have already seen one spectacular display this week: on Nov. 7th when auroras appeared in the United States as far south as Alabama and California.&lt;/em&gt;

and notes as well:

&lt;em&gt; If it&apos;s dark where you live, look for auroras now. A geomagnetic storm, sparked by two coronal mass ejections hitting Earth&apos;s magnetic field today, is in &lt;a href=&quot;http://www.sec.noaa.gov/rt_plots/kp_3d.html&quot;&gt;progress&lt;/a&gt; and intensifying. &lt;/em&gt;

In their &lt;a href=&quot;http://www.spaceweather.com/aurora/gallery_01nov04.htm&quot;&gt;November 2004 Aurora Gallery&lt;/a&gt;, one photograph is from last night--all the rest are from the night before... 

I have never seen aurora so bright in Seattle. I just wish I could gotten out of town.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766334</guid>
		<pubDate>Tue, 09 Nov 2004 11:43:55 -0800</pubDate>
		<dc:creator>y2karl</dc:creator>
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		<title>By: five fresh fish</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766348</link>	
		<description>Hey, I saw &apos;em, too.  Not nearly as bright up here, though, which is a little surprising.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766348</guid>
		<pubDate>Tue, 09 Nov 2004 11:54:13 -0800</pubDate>
		<dc:creator>five fresh fish</dc:creator>
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		<title>By: psmealey</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766353</link>	
		<description>&lt;i&gt;A cloud appears above your head.
A beam of light comes shining down on you.
Shining down on you.

The cloud is moving nearer still.
Aurora borealis comes in view.
Aurora comes in view.

And I ran.
I ran so far away.
I just ran.
I ran all night and day.
I couldn&apos;t get away.&lt;/i&gt;</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766353</guid>
		<pubDate>Tue, 09 Nov 2004 11:56:42 -0800</pubDate>
		<dc:creator>psmealey</dc:creator>
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		<title>By: PrinceValium</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766376</link>	
		<description>Yep, I meant Sunday. Sorry about that. For law students, weekends mean nothing.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766376</guid>
		<pubDate>Tue, 09 Nov 2004 12:22:44 -0800</pubDate>
		<dc:creator>PrinceValium</dc:creator>
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		<title>By: ook</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766385</link>	
		<description>I saw it last night about halfway through a late flight from Chicago to Hartford. Faint, blue streaks, lasted about five minutes; looked exactly like the patterns you get when light reflects off a bit of rippled cellophane onto the ceiling.   Nifty, but i&apos;m a bit jealous of some of the displays others have seen -- this was pretty subtle.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766385</guid>
		<pubDate>Tue, 09 Nov 2004 12:28:45 -0800</pubDate>
		<dc:creator>ook</dc:creator>
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		<title>By: y2karl</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766406</link>	
		<description>This &lt;a href=&quot;http://www.sec.noaa.gov/pmap/pmapN.html&quot;&gt;plot&lt;/a&gt; shows the current extent and position of the auroral oval in the northern hemisphere, extrapolated from measurements taken during the most recent polar pass of the NOAA POES satellite. 

The arrow indicates the position of solar noon. The orange part of that oval is going to swing around and down, and, from the looks of it, appears to indicate there will be easily visible aurora along the northern tier of the 48 states tonight. That is from &lt;a href=&quot;http://sohowww.nascom.nasa.gov/spaceweather/&quot;&gt;SOHO Current Space Weather&lt;/a&gt;.

The last time I saw aurora was in August of 2000, again in Seattle. What I found remarkable then and last Sunday night were the subtle and rapid strobing waves that passed across the entire sky. I was familiar with the slowly streaming curtains from childhood but along with those, these last two times, were sparkles, swaths of light that shot across the meridian and rippling waves redolent of those produced by dying neon lights overlayed in a glaze upon the curtain auroras. As someone said Sunday night,&lt;em&gt; I haven&apos;t seen anything like this since forty minutes after the last time I dropped acid.&lt;/em&gt;

The ones I saw Sunday were a pale green, but that was from along Gilman Drive on the West side of Queen Anne Hill, which is festooned with those orange sodium vapor street lights. I wish now I&apos;d hopped on my bike and rode over to Discovery Park.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766406</guid>
		<pubDate>Tue, 09 Nov 2004 12:58:41 -0800</pubDate>
		<dc:creator>y2karl</dc:creator>
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		<title>By: Salmonberry</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766544</link>	
		<description>...and of course it&apos;s cloudy here. This place is not astronomy friendly, damnit.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766544</guid>
		<pubDate>Tue, 09 Nov 2004 16:44:21 -0800</pubDate>
		<dc:creator>Salmonberry</dc:creator>
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		<title>By: livii</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766569</link>	
		<description>Saw it Sunday night too, in Ottawa, Ontario.  My friend put some photos online, but I&apos;d feel bad linking to them here.  I&apos;d never seen one before.  It was a pale green and was mistaken by some in our party (not me!) for clouds.  ;)

Oh, and: &lt;i&gt;For law students, weekends mean nothing.&lt;/i&gt;

You&apos;re working too hard, dude.  Way, way too fucking hard.  Plus, you&apos;re just perpetuating the stereotype that law is complicated and hard and stuff.  I keep thinking I&apos;m going to get thrown out of the profession for saying this, but honestly, it&apos;s not as hard as lawyers try to make it out to be.  (Well, not that I&apos;ve practiced yet.)</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766569</guid>
		<pubDate>Tue, 09 Nov 2004 17:05:47 -0800</pubDate>
		<dc:creator>livii</dc:creator>
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		<title>By: naxosaxur</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766624</link>	
		<description>I saw it on Sunday in Principal Skinner&apos;s kitchen.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766624</guid>
		<pubDate>Tue, 09 Nov 2004 18:48:46 -0800</pubDate>
		<dc:creator>naxosaxur</dc:creator>
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		<title>By: jessamyn</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766630</link>	
		<description>They are very bright here [central VT] this evening, sort of green and shimmery, not shooting too high. I dragged my law student boyfriend out for a quick walk around the neighborhood. It&apos;s interesting to watch the clouds in front of the Aurora turn completely black when they get really bright.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766630</guid>
		<pubDate>Tue, 09 Nov 2004 18:54:19 -0800</pubDate>
		<dc:creator>jessamyn</dc:creator>
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		<title>By: y2karl</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766646</link>	
		<description>&lt;a href=&quot;http://www.sec.noaa.gov/pmap/pmapN.html&quot;&gt;Current extent and position of the auroral oval in the northern hemisphere&lt;/a&gt;

From the picture right now, Jessamyn, it looks like you&apos;re well in the zone.

&lt;a href=&quot;http://www.spaceweather.com/&quot;&gt;Spaceweather&lt;/a&gt; notes &lt;em&gt;Sunspot 696 has produced two more big explosions: an M8-flare at 1715 UT on Nov. 9th and an X2-flare at 0300 UT on Nov. 10th. At least one CME is heading for Earth as a result of the blasts.&lt;/em&gt;

I recommend you all sign up for their email alerts.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766646</guid>
		<pubDate>Tue, 09 Nov 2004 19:31:03 -0800</pubDate>
		<dc:creator>y2karl</dc:creator>
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		<title>By: five fresh fish</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766655</link>	
		<description>I&apos;m not so sure I want email alerts telling me that earth was nearly missed by an asteroid...</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766655</guid>
		<pubDate>Tue, 09 Nov 2004 19:46:15 -0800</pubDate>
		<dc:creator>five fresh fish</dc:creator>
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		<title>By: bargle</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766658</link>	
		<description>never seen this.  then again, i live in arkansas, probably too far south to ever see it to begin with.  i guess?  been cloudy anyway.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766658</guid>
		<pubDate>Tue, 09 Nov 2004 19:52:50 -0800</pubDate>
		<dc:creator>bargle</dc:creator>
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		<title>By: amberglow</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766668</link>	
		<description>me neither bargle, and i&apos;m further north than you...one day, i guess. (i think there&apos;s too much light here already for it to show up)</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766668</guid>
		<pubDate>Tue, 09 Nov 2004 20:17:23 -0800</pubDate>
		<dc:creator>amberglow</dc:creator>
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		<title>By: y2karl</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766673</link>	
		<description>From &lt;a href=&quot;http://www.aurorachasers.com/FAQ/index_html#G15&quot;&gt;Aurorachasers FAQ&lt;/a&gt;:

&lt;em&gt;What is Pulsating Aurora?

Pulsating aurora is a rare type of aurora. It is very dim, and fast. I liken it to someone dropping paint drops on the atmosphere. Each pulse tends to last 1-2 seconds and is very fast. You tend to see it later on during the night/storm and usually directly overhead after you have dark adapted your eyes for a while.&lt;/em&gt;

&lt;a href=&quot;http://www.oulu.fi/~spaceweb/textbook/aurora/pulsating/&quot; title=&quot;Pulsating auroras are a visible manifestation of modulation in the fluxes of precipitating magnetospheric electrons. They are usually observed at the morning hours during the recovery phase of a substorm. This auroral phenomenon has been studied for a long time but the question of its generation is still more or less open. It is widely believed that whistler waves play an important role in the generation of pulsations. Various theories of pulsating auroras are based on the wave-particle interaction between VLF waves and electrons in the equatorial region of the magnetosphere. &quot;&gt;Pulsating aurora&lt;/a&gt;

&lt;a href=&quot;http://www.irf.se/norrsken/Norrsken_different.html&quot;&gt;Different auroras&lt;/a&gt; has more on them.

&lt;small&gt;&lt;a href=&quot;http://www.oulu.fi/~spaceweb/textbook/aurora/pulsating/example.html&quot;&gt;An example of auroral pulsations measured by low-light-level-TV camera at Kalkkoaivi in Northern Finland.&lt;/a&gt; &lt;/small&gt;

I saw many of those on Sunday--now I know what they are called. It would be impossible to do them justice with any sort of imaging, I think. 

Scroll down for &lt;a href=&quot;http://www.eso.org/outreach/eduoff/edu-prog/catchastar/CAS2002/cas-projects/austria_aurora_1/look.html&quot;&gt;Forms of Aurora&lt;/a&gt;</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766673</guid>
		<pubDate>Tue, 09 Nov 2004 20:30:31 -0800</pubDate>
		<dc:creator>y2karl</dc:creator>
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		<title>By: y0bhgu0d</title>
		<link>http://www.metafilter.com/36847/Aurora-Borealis#766751</link>	
		<description>i saw it tonite on tennessee highway 26, on the border of north carolina.

it was dull gray, but still beautiful.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2004:site.36847-766751</guid>
		<pubDate>Tue, 09 Nov 2004 23:48:11 -0800</pubDate>
		<dc:creator>y0bhgu0d</dc:creator>
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