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	<title>Comments on: Are we aliens?</title>
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	<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/</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: Brandon C. Delaney</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-410240</link>
		<dc:creator>Brandon C. Delaney</dc:creator>
		<pubDate>Fri, 26 Aug 2011 06:35:02 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-410240</guid>
		<description>I think that all of the aliens out there are us. We are them..., and humanity is disbursed all throughout the universe... By the Grand Architech GOD himself, and we are all apart of a story continually being told throughout time. The universe is too vast to not have life anywhere else and I truly believe that we all come from other planets, and that&#039;s why we have all of the different races on this planet, which long ago started as a penal colony for criminals from everywhere else. When we arrived there were already humans here which explains the pre-dated human species that was so called found, evolution can&#039;t happen that fast. We didn&#039;t evolve from Apes. GOD is real, and life is abundant throughout the universe.</description>
		<content:encoded><![CDATA[<p>I think that all of the aliens out there are us. We are them&#8230;, and humanity is disbursed all throughout the universe&#8230; By the Grand Architech GOD himself, and we are all apart of a story continually being told throughout time. The universe is too vast to not have life anywhere else and I truly believe that we all come from other planets, and that&#8217;s why we have all of the different races on this planet, which long ago started as a penal colony for criminals from everywhere else. When we arrived there were already humans here which explains the pre-dated human species that was so called found, evolution can&#8217;t happen that fast. We didn&#8217;t evolve from Apes. GOD is real, and life is abundant throughout the universe.</p>
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		<title>By: ERIC</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-402108</link>
		<dc:creator>ERIC</dc:creator>
		<pubDate>Thu, 28 Jul 2011 21:15:27 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-402108</guid>
		<description>THERE IS ONLY CHAOS AND IN THAT LIES PERFECTION.SO IN ESSENCE ALL IS POSSIBLE AND IS BOUND TO HAPPEN AND REPEAT.THINK ABOUT IT,</description>
		<content:encoded><![CDATA[<p>THERE IS ONLY CHAOS AND IN THAT LIES PERFECTION.SO IN ESSENCE ALL IS POSSIBLE AND IS BOUND TO HAPPEN AND REPEAT.THINK ABOUT IT,</p>
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		<title>By: Zombies Responsible for Life on Earth? &#171; Zombie Anti Defamation League</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-331128</link>
		<dc:creator>Zombies Responsible for Life on Earth? &#171; Zombie Anti Defamation League</dc:creator>
		<pubDate>Thu, 11 Nov 2010 16:22:07 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-331128</guid>
		<description>[...] sniggering right there! The idea that life could have arrived on Earth as a hitchhiker has long been around, and some have even proposed that life evolved on Mars, and was transported [...]</description>
		<content:encoded><![CDATA[<p>[...] sniggering right there! The idea that life could have arrived on Earth as a hitchhiker has long been around, and some have even proposed that life evolved on Mars, and was transported [...]</p>
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		<title>By: kendra</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-253769</link>
		<dc:creator>kendra</dc:creator>
		<pubDate>Tue, 16 Mar 2010 18:14:10 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-253769</guid>
		<description>are we aliens because if you look at it earth is in space and people are saying there are aliens in space and we live in space so does that make you think well earth is in space we live on earth earth is a planet so we must be aliens</description>
		<content:encoded><![CDATA[<p>are we aliens because if you look at it earth is in space and people are saying there are aliens in space and we live in space so does that make you think well earth is in space we live on earth earth is a planet so we must be aliens</p>
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		<title>By: Blog de Astronomia do astroPT &#187; Panspermia</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-219318</link>
		<dc:creator>Blog de Astronomia do astroPT &#187; Panspermia</dc:creator>
		<pubDate>Mon, 12 Oct 2009 03:49:46 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-219318</guid>
		<description>[...] e a Chuva Vermelha de Kerala. Podem ler sobre isto, aqui, e neste nosso post. O Phil Plait tem este artigo, no blog Bad Astronomy, onde critica a forma como a panspermia tem sido divulgada pelos cientistas [...]</description>
		<content:encoded><![CDATA[<p>[...] e a Chuva Vermelha de Kerala. Podem ler sobre isto, aqui, e neste nosso post. O Phil Plait tem este artigo, no blog Bad Astronomy, onde critica a forma como a panspermia tem sido divulgada pelos cientistas [...]</p>
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		<title>By: Vishal</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-217957</link>
		<dc:creator>Vishal</dc:creator>
		<pubDate>Tue, 06 Oct 2009 14:54:40 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-217957</guid>
		<description>We are the aliens! I am pretty sure. Otherwise why would we look up at the stars and feel something that we can&#039;t grasp. We are looking at home. We see a home when we look up there. It&#039;s intrinsic. We don&#039;t need science to prove anything. We made science. Science did not make us. God damn!</description>
		<content:encoded><![CDATA[<p>We are the aliens! I am pretty sure. Otherwise why would we look up at the stars and feel something that we can&#8217;t grasp. We are looking at home. We see a home when we look up there. It&#8217;s intrinsic. We don&#8217;t need science to prove anything. We made science. Science did not make us. God damn!</p>
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		<title>By: Blog de Astronomia do astroPT &#187; Nós Somos Os Extraterrestres</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-216077</link>
		<dc:creator>Blog de Astronomia do astroPT &#187; Nós Somos Os Extraterrestres</dc:creator>
		<pubDate>Sun, 27 Sep 2009 14:09:08 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-216077</guid>
		<description>[...] e a Chuva Vermelha de Kerala. Podem ler sobre isto, aqui, e neste nosso post. O Phil Plait tem este artigo, no blog Bad Astronomy, onde critica a forma como a panspermia tem sido divulgada pelos cientistas [...]</description>
		<content:encoded><![CDATA[<p>[...] e a Chuva Vermelha de Kerala. Podem ler sobre isto, aqui, e neste nosso post. O Phil Plait tem este artigo, no blog Bad Astronomy, onde critica a forma como a panspermia tem sido divulgada pelos cientistas [...]</p>
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		<title>By: gregbaby</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-215000</link>
		<dc:creator>gregbaby</dc:creator>
		<pubDate>Tue, 22 Sep 2009 14:39:50 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-215000</guid>
		<description>The Torchwood comment was a tad silly. I&#039;m from Cardiff and never knew of this group before. I&#039;ve always thought about this subject and decided today to see if there was any kind of material regarding this, I have found a site that MAY prove me right :) It&#039;s such a simple idea that non scientists (like me) can come to this conclusion, it just depends on how much you are willing to think and use your brain. (I feel sorry for the MTV retards that beleive everything they read in the tabloids) It&#039;s nice to see some scientific evidence to support some of these claims.</description>
		<content:encoded><![CDATA[<p>The Torchwood comment was a tad silly. I&#8217;m from Cardiff and never knew of this group before. I&#8217;ve always thought about this subject and decided today to see if there was any kind of material regarding this, I have found a site that MAY prove me right <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  It&#8217;s such a simple idea that non scientists (like me) can come to this conclusion, it just depends on how much you are willing to think and use your brain. (I feel sorry for the MTV retards that beleive everything they read in the tabloids) It&#8217;s nice to see some scientific evidence to support some of these claims.</p>
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		<title>By: Interior Design posts for April 24th 2005 &#124; Best Interior Design Schools</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-157588</link>
		<dc:creator>Interior Design posts for April 24th 2005 &#124; Best Interior Design Schools</dc:creator>
		<pubDate>Fri, 20 Feb 2009 13:32:26 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-157588</guid>
		<description>[...] Are we aliens? &#124; Bad Astronomy &#124; Discover Magazine [...]</description>
		<content:encoded><![CDATA[<p>[...] Are we aliens? | Bad Astronomy | Discover Magazine [...]</p>
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		<title>By: Mike</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-137376</link>
		<dc:creator>Mike</dc:creator>
		<pubDate>Fri, 28 Nov 2008 23:35:05 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-137376</guid>
		<description>I believe this to be the truth of our origins.  Although evolution has changed our appearance, it has not changed our drive to use resources until they are gone.  We have gone from planet to planet using its resources until the planet can no longer sustain us.  My theory is we come from planets in our solar system that can no longer sustain life or itself.  The latest planet we destroyed is what we now call our moon.  We all know there is no gravity on the moon  and we all know when we die we turn to dust.  Imagine a meteor striking the moon and sending the dust into space.  If there are corpses included in that dust dna could be present.

&lt;img src=&quot;http://www.google.com/imgres?imgurl=http://www.cosmos4kids.com/extras/dtop_earth/moonearth_580.jpg&amp;imgrefurl=http://www.cosmos4kids.com/extras/dtop_earth/moonearth.html&amp;h=435&amp;w=580&amp;sz=21&amp;tbnid=By-tw9d29-sJ::&amp;tbnh=101&amp;tbnw=134&amp;prev=/images%3Fq%3Dpictures%2Bof%2Bthe%2Bearth%2Bfrom%2Bthe%2Bmoon&amp;hl=en&amp;usg=__rUIGBLL-__etw7_14WG5QD9HkAI=&amp;sa=X&amp;oi=image_result&amp;resnum=1&amp;ct=image&amp;cd=1&gt;</description>
		<content:encoded><![CDATA[<p>I believe this to be the truth of our origins.  Although evolution has changed our appearance, it has not changed our drive to use resources until they are gone.  We have gone from planet to planet using its resources until the planet can no longer sustain us.  My theory is we come from planets in our solar system that can no longer sustain life or itself.  The latest planet we destroyed is what we now call our moon.  We all know there is no gravity on the moon  and we all know when we die we turn to dust.  Imagine a meteor striking the moon and sending the dust into space.  If there are corpses included in that dust dna could be present.</p>
<p><img src="http://www.google.com/imgres?imgurl=http://www.cosmos4kids.com/extras/dtop_earth/moonearth_580.jpg&#038;imgrefurl=http://www.cosmos4kids.com/extras/dtop_earth/moonearth.html&#038;h=435&#038;w=580&#038;sz=21&#038;tbnid=By-tw9d29-sJ::&#038;tbnh=101&#038;tbnw=134&#038;prev=/images%3Fq%3Dpictures%2Bof%2Bthe%2Bearth%2Bfrom%2Bthe%2Bmoon&#038;hl=en&#038;usg=__rUIGBLL-__etw7_14WG5QD9HkAI=&#038;sa=X&#038;oi=image_result&#038;resnum=1&#038;ct=image&#038;cd=1/></p>
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		<title>By: Sugar</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-130705</link>
		<dc:creator>Sugar</dc:creator>
		<pubDate>Sun, 02 Nov 2008 04:11:43 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-130705</guid>
		<description>I suggest ALL of you READ/RESEARCH Zacharia Sitchin. Look him up on youtube; there is a lot of information there.  It appears that yes in fact we are all part alien... I&#039;ve heard one researcher say that we are supposedly made up of 22 different species of humanoid aliens mixed with the neanderthal i guess...</description>
		<content:encoded><![CDATA[<p>I suggest ALL of you READ/RESEARCH Zacharia Sitchin. Look him up on youtube; there is a lot of information there.  It appears that yes in fact we are all part alien&#8230; I&#8217;ve heard one researcher say that we are supposedly made up of 22 different species of humanoid aliens mixed with the neanderthal i guess&#8230;</p>
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		<title>By: Edwin Jose Palathinkal</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-99391</link>
		<dc:creator>Edwin Jose Palathinkal</dc:creator>
		<pubDate>Fri, 11 Jul 2008 15:03:13 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-99391</guid>
		<description>Use Occam&#039;s Razor FTW!</description>
		<content:encoded><![CDATA[<p>Use Occam&#8217;s Razor FTW!</p>
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		<title>By: Zijn wij buitenaards? : Computertaal</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-3/#comment-98776</link>
		<dc:creator>Zijn wij buitenaards? : Computertaal</dc:creator>
		<pubDate>Thu, 10 Jul 2008 18:00:54 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-98776</guid>
		<description>[...] Alleen betekent dit niet meteen dat het leven ook echt buitenaards is. Een aantal elementen komen vanuit de ruimte, maar anderen zijn ongetwijfeld hier aanwezig geweest en samen hebben ze&#8230; wel, ons geschapen. [...]</description>
		<content:encoded><![CDATA[<p>[...] Alleen betekent dit niet meteen dat het leven ook echt buitenaards is. Een aantal elementen komen vanuit de ruimte, maar anderen zijn ongetwijfeld hier aanwezig geweest en samen hebben ze&#8230; wel, ons geschapen. [...]</p>
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		<title>By: Horoscopes Daily Physics</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-97291</link>
		<dc:creator>Horoscopes Daily Physics</dc:creator>
		<pubDate>Mon, 07 Jul 2008 21:56:35 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-97291</guid>
		<description>&lt;strong&gt;Horoscopes Daily Physics&lt;/strong&gt;

</description>
		<content:encoded><![CDATA[<p><strong>Horoscopes Daily Physics</strong></p>
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		<title>By: Cool Free Daily Horoscopes</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-97225</link>
		<dc:creator>Cool Free Daily Horoscopes</dc:creator>
		<pubDate>Mon, 07 Jul 2008 17:23:31 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-97225</guid>
		<description>&lt;strong&gt;Cool Free Daily Horoscopes&lt;/strong&gt;

</description>
		<content:encoded><![CDATA[<p><strong>Cool Free Daily Horoscopes</strong></p>
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		<title>By: Www.yahoo.com Horoscopes</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-97162</link>
		<dc:creator>Www.yahoo.com Horoscopes</dc:creator>
		<pubDate>Mon, 07 Jul 2008 13:46:32 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-97162</guid>
		<description>&lt;strong&gt;Www.yahoo.com Horoscopes&lt;/strong&gt;

) Some individuals or companies have abused the TrackBack feature to insert spam links on some blogs (see sping).It has since been</description>
		<content:encoded><![CDATA[<p><strong><a href="http://Www.yahoo.com" rel="nofollow">http://Www.yahoo.com</a> Horoscopes</strong></p>
<p>) Some individuals or companies have abused the TrackBack feature to insert spam links on some blogs (see sping).It has since been</p>
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		<title>By: liuli</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-1002</link>
		<dc:creator>liuli</dc:creator>
		<pubDate>Thu, 26 Jun 2008 03:28:34 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-1002</guid>
		<description>Chinese–LIUGONG wheel loader, HC forklift, Feeler Forklift, Carter Excavator, XCMG wheel loader, motor grader, Paver, Road Roller.</description>
		<content:encoded><![CDATA[<p>Chinese–LIUGONG wheel loader, HC forklift, Feeler Forklift, Carter Excavator, XCMG wheel loader, motor grader, Paver, Road Roller.</p>
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		<title>By: ReducedMass.com - Science blog for the casually curious. &#187; Are there a big-ass plutoids out there?</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-1001</link>
		<dc:creator>ReducedMass.com - Science blog for the casually curious. &#187; Are there a big-ass plutoids out there?</dc:creator>
		<pubDate>Fri, 20 Jun 2008 00:19:14 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-1001</guid>
		<description>[...] making it possible for life as we know it to evolve. Especially if the building blocks of life are floating around in space.   Comments (0) [...]</description>
		<content:encoded><![CDATA[<p>[...] making it possible for life as we know it to evolve. Especially if the building blocks of life are floating around in space.   Comments (0) [...]</p>
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		<title>By: fireballinspace</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-1000</link>
		<dc:creator>fireballinspace</dc:creator>
		<pubDate>Wed, 18 Jun 2008 20:36:55 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-1000</guid>
		<description>Remeber if you look you shall find or is it you shall see its one of them but what I forgot to say is that its right in front of our eyes!</description>
		<content:encoded><![CDATA[<p>Remeber if you look you shall find or is it you shall see its one of them but what I forgot to say is that its right in front of our eyes!</p>
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		<title>By: fireballinspace</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-999</link>
		<dc:creator>fireballinspace</dc:creator>
		<pubDate>Wed, 18 Jun 2008 20:31:25 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-999</guid>
		<description>Things are all ways fallen from space unto earth some things we see and some things we cant ,there are so many wonderful thing that could be happen all around us and not even know it!It goes all the way back to christ days  or even befor that what about his dad GOD, how did he get there. eygeptions seem to be live there where aliens and im quite sure there are there are tomany planets that s out some we&quot;ve never seen. But yes we are aliens and they are the predators...just kiding by the way is there any more quicksand any were in the world??</description>
		<content:encoded><![CDATA[<p>Things are all ways fallen from space unto earth some things we see and some things we cant ,there are so many wonderful thing that could be happen all around us and not even know it!It goes all the way back to christ days  or even befor that what about his dad GOD, how did he get there. eygeptions seem to be live there where aliens and im quite sure there are there are tomany planets that s out some we&#8221;ve never seen. But yes we are aliens and they are the predators&#8230;just kiding by the way is there any more quicksand any were in the world??</p>
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		<title>By: Atsrological Quiz</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-998</link>
		<dc:creator>Atsrological Quiz</dc:creator>
		<pubDate>Wed, 18 Jun 2008 13:38:34 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-998</guid>
		<description>I agree with this writeup.But i think still lots need to be researched to finally reach the conclusion.</description>
		<content:encoded><![CDATA[<p>I agree with this writeup.But i think still lots need to be researched to finally reach the conclusion.</p>
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		<title>By: Cayetano</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-997</link>
		<dc:creator>Cayetano</dc:creator>
		<pubDate>Wed, 18 Jun 2008 11:03:00 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-997</guid>
		<description>So when you thought you came from &quot;europe&quot; let&#039;s say, they discovered you really came from Africa, so whe&#039;re africans? Whe are humans, whe&#039;re from the world. Now researchers have found that some kind of molecules that form part in basis of life can have an extraterrestrial origin, so, whe&#039;re aliens? It all started in a &quot;small bang&quot;, life, matter... even the computer in front of you. Whe&#039;re all from the Universe</description>
		<content:encoded><![CDATA[<p>So when you thought you came from &#8220;europe&#8221; let&#8217;s say, they discovered you really came from Africa, so whe&#8217;re africans? Whe are humans, whe&#8217;re from the world. Now researchers have found that some kind of molecules that form part in basis of life can have an extraterrestrial origin, so, whe&#8217;re aliens? It all started in a &#8220;small bang&#8221;, life, matter&#8230; even the computer in front of you. Whe&#8217;re all from the Universe</p>
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		<title>By: Links for 18-06-2008 &#124; Velcro City Tourist Board</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-996</link>
		<dc:creator>Links for 18-06-2008 &#124; Velcro City Tourist Board</dc:creator>
		<pubDate>Wed, 18 Jun 2008 03:31:27 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-996</guid>
		<description>[...] - Are we aliens? &#8220;So this means that the some of the basic building blocks of life formed out in space, and [...]</description>
		<content:encoded><![CDATA[<p>[...] &#8211; Are we aliens? &#8220;So this means that the some of the basic building blocks of life formed out in space, and [...]</p>
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		<title>By: Tom Marking</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-995</link>
		<dc:creator>Tom Marking</dc:creator>
		<pubDate>Tue, 17 Jun 2008 21:17:52 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-995</guid>
		<description>&lt;blockquote&gt;I’ve got a question regarding the isotope tests. You say this testing can differentiate terrestrial from extra-terrestrial compounds. If the compounds on these meteorites don’t match the terrestrial compounds, that tells us they’re from space.&lt;/blockquote&gt;

http://en.wikipedia.org/wiki/Isotopes_of_carbon

The natural abundance of carbon isotopes on earth is 98.93% carbon-12 and 1.07% carbon-13.  This apparently represents the isotopic composition of the solar nebula which formed the sun and the planets.

Now the important point about Earth biology is that it favors the carbon-12 isotope.  Thus, in sedimentary rock containing the remains of living organisms the percentage of carbon-13 is smaller than 1.07%.  This is thus a signature of life.  A group of scientists have used this signature to date the beginnings of earthly life back to 3.85 billion years and perhaps beyond that.

http://www.pbs.org/wgbh/evolution/library/03/3/text_pop/l_033_28.html

So far, all of the carbon tested in meteorites contains the usual percentage of carbon-13 (1.07%) and is therefore a pretty good indication that panspermia is bunk.</description>
		<content:encoded><![CDATA[<blockquote><p>I’ve got a question regarding the isotope tests. You say this testing can differentiate terrestrial from extra-terrestrial compounds. If the compounds on these meteorites don’t match the terrestrial compounds, that tells us they’re from space.</p></blockquote>
<p><a href="http://en.wikipedia.org/wiki/Isotopes_of_carbon" rel="nofollow">http://en.wikipedia.org/wiki/Isotopes_of_carbon</a></p>
<p>The natural abundance of carbon isotopes on earth is 98.93% carbon-12 and 1.07% carbon-13.  This apparently represents the isotopic composition of the solar nebula which formed the sun and the planets.</p>
<p>Now the important point about Earth biology is that it favors the carbon-12 isotope.  Thus, in sedimentary rock containing the remains of living organisms the percentage of carbon-13 is smaller than 1.07%.  This is thus a signature of life.  A group of scientists have used this signature to date the beginnings of earthly life back to 3.85 billion years and perhaps beyond that.</p>
<p><a href="http://www.pbs.org/wgbh/evolution/library/03/3/text_pop/l_033_28.html" rel="nofollow">http://www.pbs.org/wgbh/evolution/library/03/3/text_pop/l_033_28.html</a></p>
<p>So far, all of the carbon tested in meteorites contains the usual percentage of carbon-13 (1.07%) and is therefore a pretty good indication that panspermia is bunk.</p>
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		<title>By: Links do Dia: 17/06/08 &#171; O Discreto Blog da Burguesia</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/comment-page-2/#comment-994</link>
		<dc:creator>Links do Dia: 17/06/08 &#171; O Discreto Blog da Burguesia</dc:creator>
		<pubDate>Tue, 17 Jun 2008 20:36:01 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/14/are-we-aliens/#comment-994</guid>
		<description>[...] &#8220;Somos Aliens?&#8221;: O Discreto Blog da Burguesia novamente se aventura na tradução direta de um trecho, dessa vez de [...]</description>
		<content:encoded><![CDATA[<p>[...] &#8220;Somos Aliens?&#8221;: O Discreto Blog da Burguesia novamente se aventura na tradução direta de um trecho, dessa vez de [...]</p>
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