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	<title>Comments on: Space Launches As You&#8217;ve Never Seen Them Before</title>
	<atom:link href="http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/feed" rel="self" type="application/rss+xml" />
	<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574</link>
	<description>for environmentalists who don't take themselves too seriously</description>
	<lastBuildDate>Tue, 24 Nov 2009 17:42:29 +0000</lastBuildDate>
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		<title>By: gary</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-275954</link>
		<dc:creator>gary</dc:creator>
		<pubDate>Tue, 10 Nov 2009 16:19:18 +0000</pubDate>
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		<description>fantastic</description>
		<content:encoded><![CDATA[<p>fantastic</p>
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		<title>By: Anton</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-260926</link>
		<dc:creator>Anton</dc:creator>
		<pubDate>Mon, 31 Aug 2009 10:42:52 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-260926</guid>
		<description>Very cool pictures of the space shuttle launching.</description>
		<content:encoded><![CDATA[<p>Very cool pictures of the space shuttle launching.</p>
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		<title>By: Anton</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-260922</link>
		<dc:creator>Anton</dc:creator>
		<pubDate>Mon, 31 Aug 2009 10:41:19 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-260922</guid>
		<description>I love Super Florida foto</description>
		<content:encoded><![CDATA[<p>I love Super Florida foto</p>
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		<title>By: Ivan</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-245138</link>
		<dc:creator>Ivan</dc:creator>
		<pubDate>Thu, 09 Jul 2009 11:21:15 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-245138</guid>
		<description>If you believe it or not, not only NASA performs space launches.
In fact, in recent years the Russian space agency &quot;Roskosmos&quot; did more launches than any other space agency in the world.

Sorry, I have no pictures, but here is Roskosmos&#039; Youtube channel dedicated to rocket launches, some of they simply amazing:
http://www.youtube.com/view_play_list?p=51E1DC20A0890FEC</description>
		<content:encoded><![CDATA[<p>If you believe it or not, not only NASA performs space launches.<br />
In fact, in recent years the Russian space agency &#8220;Roskosmos&#8221; did more launches than any other space agency in the world.</p>
<p>Sorry, I have no pictures, but here is Roskosmos&#8217; Youtube channel dedicated to rocket launches, some of they simply amazing:<br />
<a href="http://www.youtube.com/view_play_list?p=51E1DC20A0890FEC" rel="nofollow">http://www.youtube.com/view_play_list?p=51E1DC20A0890FEC</a></p>
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		<title>By: Jon Winthorp</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-243389</link>
		<dc:creator>Jon Winthorp</dc:creator>
		<pubDate>Sun, 05 Jul 2009 04:03:44 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-243389</guid>
		<description>Very cool pictures of the space shuttle launching. :-)</description>
		<content:encoded><![CDATA[<p>Very cool pictures of the space shuttle launching. :-)</p>
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		<title>By: Sarah</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-242545</link>
		<dc:creator>Sarah</dc:creator>
		<pubDate>Thu, 02 Jul 2009 13:13:50 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-242545</guid>
		<description>The first image is really amazing, with the moon next to the launch.</description>
		<content:encoded><![CDATA[<p>The first image is really amazing, with the moon next to the launch.</p>
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		<title>By: juegos</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-237765</link>
		<dc:creator>juegos</dc:creator>
		<pubDate>Wed, 17 Jun 2009 15:12:09 +0000</pubDate>
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		<description>I like the second picture looks awsome, almost like a missile has been launch</description>
		<content:encoded><![CDATA[<p>I like the second picture looks awsome, almost like a missile has been launch</p>
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		<title>By: Bilsko</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-223686</link>
		<dc:creator>Bilsko</dc:creator>
		<pubDate>Wed, 13 May 2009 17:45:42 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-223686</guid>
		<description>I stand corrected on my look at the SBR emissions.  This link is really helpful to identify the emissions proportions:

http://www.bautforum.com/1056479-post22.html

The CO2 emissions are tiny (but present nevertheless!)

The Carbon Monoxide emissions are a bit more alarming</description>
		<content:encoded><![CDATA[<p>I stand corrected on my look at the SBR emissions.  This link is really helpful to identify the emissions proportions:</p>
<p><a href="http://www.bautforum.com/1056479-post22.html" rel="nofollow">http://www.bautforum.com/1056479-post22.html</a></p>
<p>The CO2 emissions are tiny (but present nevertheless!)</p>
<p>The Carbon Monoxide emissions are a bit more alarming</p>
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		<title>By: Bilsko</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-223684</link>
		<dc:creator>Bilsko</dc:creator>
		<pubDate>Wed, 13 May 2009 17:40:24 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-223684</guid>
		<description>Great set of pictures.  One observation:

You should be a bit more careful assessing the environmental impact of a space shuttle launch.  The indirect impacts (all of the embedded emissions in manufacturing and transporting the equipment) are certainly worth some concern.  

But take more care with statements like &quot;Shuttle launches undoubtedly affect the environment, both directly with their emissions...&quot; 

If you look at the fuel sources used for the shuttle launch, I think you&#039;ll be surprised.  The Shuttle relies on the two Solid Rocket Boosters (SRB) and the External Fuel Tank for most of the thrust to get it in to orbit.  The primary fuel source for the SRB?  Aluminum.  70% of the weight of each of those SRBs is Aluminum. Potassium perchlorate is used as a catalyst - so the products of combustion in each SRB are potassium chloride and aluminum oxide.  One of them is commonly used for fertilizer.  Neither is considered a criteria pollutant or GHG. 

The External Fuel tank is even more benign and simpler.   It has liquid hydrogen and liquid oxygen.  The product of combustion is water vapor - which condenses out before contributing to the GH effect. 

There is some potential for NOx emissions from Nitrogen present in the air in and around the combustion chambers, but its probably pretty small. 

So all in all, the direct emissions from a shuttle launch are negligible and GHG contributions are essentially zero.</description>
		<content:encoded><![CDATA[<p>Great set of pictures.  One observation:</p>
<p>You should be a bit more careful assessing the environmental impact of a space shuttle launch.  The indirect impacts (all of the embedded emissions in manufacturing and transporting the equipment) are certainly worth some concern.  </p>
<p>But take more care with statements like &#8220;Shuttle launches undoubtedly affect the environment, both directly with their emissions&#8230;&#8221; </p>
<p>If you look at the fuel sources used for the shuttle launch, I think you&#8217;ll be surprised.  The Shuttle relies on the two Solid Rocket Boosters (SRB) and the External Fuel Tank for most of the thrust to get it in to orbit.  The primary fuel source for the SRB?  Aluminum.  70% of the weight of each of those SRBs is Aluminum. Potassium perchlorate is used as a catalyst &#8211; so the products of combustion in each SRB are potassium chloride and aluminum oxide.  One of them is commonly used for fertilizer.  Neither is considered a criteria pollutant or GHG. </p>
<p>The External Fuel tank is even more benign and simpler.   It has liquid hydrogen and liquid oxygen.  The product of combustion is water vapor &#8211; which condenses out before contributing to the GH effect. </p>
<p>There is some potential for NOx emissions from Nitrogen present in the air in and around the combustion chambers, but its probably pretty small. </p>
<p>So all in all, the direct emissions from a shuttle launch are negligible and GHG contributions are essentially zero.</p>
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		<title>By: BobPixel</title>
		<link>http://www.environmentalgraffiti.com/featured/space-launches-as-never-seen-before/10574/comment-page-1#comment-221239</link>
		<dc:creator>BobPixel</dc:creator>
		<pubDate>Sat, 09 May 2009 21:06:13 +0000</pubDate>
		<guid isPermaLink="false">http://www.environmentalgraffiti.com/?p=10574#comment-221239</guid>
		<description>&quot;[E]ach launch is part of the bigger picture that is space exploration, the long-term benefits of which may far outweigh its costs as we overcrowd our small planet.&quot;

What an excellent point! Recently, the utility company PG&amp;E agreed to buy space-based solar power. This could be tyhe start of some real tangible benefit to humanity and the environment!</description>
		<content:encoded><![CDATA[<p>&#8220;[E]ach launch is part of the bigger picture that is space exploration, the long-term benefits of which may far outweigh its costs as we overcrowd our small planet.&#8221;</p>
<p>What an excellent point! Recently, the utility company PG&amp;E agreed to buy space-based solar power. This could be tyhe start of some real tangible benefit to humanity and the environment!</p>
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