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	<title>Comments on: 748 days in space</title>
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	<link>http://polyscience.org/2005/08/748-days-in-space/</link>
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		<title>By: polyscience.org &#187; The Space Cycle</title>
		<link>http://polyscience.org/2005/08/748-days-in-space/comment-page-1/#comment-202</link>
		<dc:creator>polyscience.org &#187; The Space Cycle</dc:creator>
		<pubDate>Sat, 17 Sep 2005 02:11:45 +0000</pubDate>
		<guid isPermaLink="false">http://polyscience.org/?p=58#comment-202</guid>
		<description>[...] A month ago to the day, I wrote about Sergei Krikalev&#8217;s record-setting time in space: 748 days. I also mentioned that it was at possible detriment to his health: being in a &#8220;zero G&#8221; environment takes its toll on the body in numerous way. Chief among them is bone density and muscle loss. The body doesn&#8217;t need the excess bone and muscle tissue to support itself in space so it gets rid of it to be more efficient. Obviously this poses some problems when you return to Earth and are unable to stand up or otherwise function normally, so astronauts on long space missions exercise to minimize the impact to their health. [...]</description>
		<content:encoded><![CDATA[<p>[...] A month ago to the day, I wrote about Sergei Krikalev&#8217;s record-setting time in space: 748 days. I also mentioned that it was at possible detriment to his health: being in a &#8220;zero G&#8221; environment takes its toll on the body in numerous way. Chief among them is bone density and muscle loss. The body doesn&#8217;t need the excess bone and muscle tissue to support itself in space so it gets rid of it to be more efficient. Obviously this poses some problems when you return to Earth and are unable to stand up or otherwise function normally, so astronauts on long space missions exercise to minimize the impact to their health. [...]</p>
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		<title>By: Rian</title>
		<link>http://polyscience.org/2005/08/748-days-in-space/comment-page-1/#comment-89</link>
		<dc:creator>Rian</dc:creator>
		<pubDate>Tue, 16 Aug 2005 20:45:43 +0000</pubDate>
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		<description>Oh, nuts.</description>
		<content:encoded><![CDATA[<p>Oh, nuts.</p>
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		<title>By: Mike</title>
		<link>http://polyscience.org/2005/08/748-days-in-space/comment-page-1/#comment-88</link>
		<dc:creator>Mike</dc:creator>
		<pubDate>Tue, 16 Aug 2005 20:13:43 +0000</pubDate>
		<guid isPermaLink="false">http://polyscience.org/?p=58#comment-88</guid>
		<description>Just a correction:  His record is for cumulative days in space, not consecutive.  He&#039;s only been up there since mid-April.</description>
		<content:encoded><![CDATA[<p>Just a correction:  His record is for cumulative days in space, not consecutive.  He&#8217;s only been up there since mid-April.</p>
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