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	<title>Comments on: I abhor a vacuum</title>
	<atom:link href="http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/</link>
	<description>I am an astronomer, writer, and skeptic. I likes reality the way it is, and I aims to keep it that way. My real name is Phil Plait, and I run the Bad Astronomy blog.</description>
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		<title>By: Tobi</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/comment-page-2/#comment-115024</link>
		<dc:creator>Tobi</dc:creator>
		<pubDate>Tue, 02 Sep 2008 14:46:45 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/#comment-115024</guid>
		<description>I had a middle school science teacher who would always say &quot;Nothing sucks; everything blows.&quot;</description>
		<content:encoded><![CDATA[<p>I had a middle school science teacher who would always say &#8220;Nothing sucks; everything blows.&#8221;</p>
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		<title>By: GQ</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/comment-page-2/#comment-114947</link>
		<dc:creator>GQ</dc:creator>
		<pubDate>Mon, 01 Sep 2008 14:13:57 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/#comment-114947</guid>
		<description>A little late for the discussion but someone suffers a &quot;space hicky&quot; in the movie &quot;Event Horizon&quot;.

And doesn&#039;t Tim Robbins get that intense sunburn thing in some movie? Can&#039;t remeber which one but its something about a mission to Mars...</description>
		<content:encoded><![CDATA[<p>A little late for the discussion but someone suffers a &#8220;space hicky&#8221; in the movie &#8220;Event Horizon&#8221;.</p>
<p>And doesn&#8217;t Tim Robbins get that intense sunburn thing in some movie? Can&#8217;t remeber which one but its something about a mission to Mars&#8230;</p>
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		<title>By: marko</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/comment-page-2/#comment-113661</link>
		<dc:creator>marko</dc:creator>
		<pubDate>Sat, 23 Aug 2008 14:32:36 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/#comment-113661</guid>
		<description>I&#039;m in the 1:17 group, too. But hey, there are many wonderful things you can do in 77 seconds: watch your whole life roll out before your eyes, for example. I&#039;m 37 years old, so that would mean roughly 175 days each second. That&#039;s what I would call fast forward.

Of those 77s, I&#039;d be watching myself eat 5s, on the train 3s,  walk 4s, messing around with computers 25s and asleep 26s. The remaining 14s ain&#039;t none of anybodies business.   :-P</description>
		<content:encoded><![CDATA[<p>I&#8217;m in the 1:17 group, too. But hey, there are many wonderful things you can do in 77 seconds: watch your whole life roll out before your eyes, for example. I&#8217;m 37 years old, so that would mean roughly 175 days each second. That&#8217;s what I would call fast forward.</p>
<p>Of those 77s, I&#8217;d be watching myself eat 5s, on the train 3s,  walk 4s, messing around with computers 25s and asleep 26s. The remaining 14s ain&#8217;t none of anybodies business.   <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_razz.gif' alt=':-P' class='wp-smiley' /> </p>
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		<title>By: Emily</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/comment-page-2/#comment-113154</link>
		<dc:creator>Emily</dc:creator>
		<pubDate>Thu, 21 Aug 2008 11:50:30 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/#comment-113154</guid>
		<description>This page at NASA says that hemorrhaging / freezing wouldn’t really be as much of a problem as, well, suffocation. It also says that holding your breath is a bad idea.This is SO great! Awesome information.</description>
		<content:encoded><![CDATA[<p>This page at NASA says that hemorrhaging / freezing wouldn’t really be as much of a problem as, well, suffocation. It also says that holding your breath is a bad idea.This is SO great! Awesome information.</p>
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		<title>By: Charon</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/comment-page-2/#comment-113135</link>
		<dc:creator>Charon</dc:creator>
		<pubDate>Thu, 21 Aug 2008 06:55:14 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/#comment-113135</guid>
		<description>Space isn&#039;t a vacuum, at least not a perfect one. There&#039;s a lot of gas out there, although it&#039;s not very dense. There are many definitions of temperature (e.g., brightness temperature and spin temperature), but they don&#039;t agree in systems that aren&#039;t in thermodynamic equilibrium (like the interstellar medium). The ISM is never cooler than about 10K, though most areas are much hotter (~5000K is considered just &quot;warm&quot;), though as Torbjörn Larsson points out the (brightness) temperature can never drop below that of the CMB (2.7K).</description>
		<content:encoded><![CDATA[<p>Space isn&#8217;t a vacuum, at least not a perfect one. There&#8217;s a lot of gas out there, although it&#8217;s not very dense. There are many definitions of temperature (e.g., brightness temperature and spin temperature), but they don&#8217;t agree in systems that aren&#8217;t in thermodynamic equilibrium (like the interstellar medium). The ISM is never cooler than about 10K, though most areas are much hotter (~5000K is considered just &#8220;warm&#8221;), though as Torbjörn Larsson points out the (brightness) temperature can never drop below that of the CMB (2.7K).</p>
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		<title>By: Torbjörn Larsson, OM</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/comment-page-2/#comment-113071</link>
		<dc:creator>Torbjörn Larsson, OM</dc:creator>
		<pubDate>Wed, 20 Aug 2008 21:16:32 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/#comment-113071</guid>
		<description>@ Gary Ansorge:

&lt;blockquote&gt;
VACUUM HAS NO TEMPERATURE
&lt;/blockquote&gt;

Of course it has, as everything else that interacts with matter. Vacuum consists of all fields, and fields have temperature as observable with a thermometer (i.e. interacting with matter). As it happens, cosmological vacuum has the temperature of the microwave background radiation. 

In fact, &lt;a href=&quot;http://blogs.discovermagazine.com/badastronomy/2008/07/23/is-the-lhc-colder-than-space/&quot; rel=&quot;nofollow&quot;&gt;there was a recent thread here on the subject&lt;/a&gt;.</description>
		<content:encoded><![CDATA[<p>@ Gary Ansorge:</p>
<blockquote><p>
VACUUM HAS NO TEMPERATURE
</p></blockquote>
<p>Of course it has, as everything else that interacts with matter. Vacuum consists of all fields, and fields have temperature as observable with a thermometer (i.e. interacting with matter). As it happens, cosmological vacuum has the temperature of the microwave background radiation. </p>
<p>In fact, <a href="http://blogs.discovermagazine.com/badastronomy/2008/07/23/is-the-lhc-colder-than-space/" rel="nofollow">there was a recent thread here on the subject</a>.</p>
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		<title>By: Larian LeQuella</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/comment-page-2/#comment-112934</link>
		<dc:creator>Larian LeQuella</dc:creator>
		<pubDate>Wed, 20 Aug 2008 12:12:33 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/08/18/i-abhor-a-vacuum/#comment-112934</guid>
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