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	<title>Comments on: Has the Earth been destroyed yet?</title>
	<atom:link href="http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/</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: Nigel Depledge</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/comment-page-1/#comment-126351</link>
		<dc:creator>Nigel Depledge</dc:creator>
		<pubDate>Fri, 17 Oct 2008 09:30:58 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/#comment-126351</guid>
		<description>Siri said:
&lt;blockquote&gt;Interestingly, they say that a GRB will not put a dent on Earth. On the contrary, I remember reading on several occasions on BA site that a GRB directed to Earth will have catastrophic effects. 

Can someone set me straight on this?&lt;/blockquote&gt;

Obviously, we need to read Phil&#039;s new book to get the full story, but my understanding is this...

A nearby GRB would have no effect on the Earth at all.  It will not alter its rotation, nor its revolution about Sol.  Neither will it strip away the atmosphere (unless it&#039;s really, really close!) or boil the oceans.

However, a nearby GRB would likely kill pretty nearly every living thing on one half of the planet. (Deep ocean creatures are fairly safe, because the sheer depth of water makes a pretty good radiation shield, even against gamma rays.  Also, anything that lives under rocks (and stays there) is likely to be spared the worst of the radiation, but may not be able to find anything to eat afterwards.)</description>
		<content:encoded><![CDATA[<p>Siri said:</p>
<blockquote><p>Interestingly, they say that a GRB will not put a dent on Earth. On the contrary, I remember reading on several occasions on BA site that a GRB directed to Earth will have catastrophic effects. </p>
<p>Can someone set me straight on this?</p></blockquote>
<p>Obviously, we need to read Phil&#8217;s new book to get the full story, but my understanding is this&#8230;</p>
<p>A nearby GRB would have no effect on the Earth at all.  It will not alter its rotation, nor its revolution about Sol.  Neither will it strip away the atmosphere (unless it&#8217;s really, really close!) or boil the oceans.</p>
<p>However, a nearby GRB would likely kill pretty nearly every living thing on one half of the planet. (Deep ocean creatures are fairly safe, because the sheer depth of water makes a pretty good radiation shield, even against gamma rays.  Also, anything that lives under rocks (and stays there) is likely to be spared the worst of the radiation, but may not be able to find anything to eat afterwards.)</p>
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		<title>By: IVAN3MAN</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/comment-page-1/#comment-126350</link>
		<dc:creator>IVAN3MAN</dc:creator>
		<pubDate>Fri, 17 Oct 2008 09:24:32 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/#comment-126350</guid>
		<description>@ shane

Yeah, she is sultry. There were many versions of that video at various video hosting web-sites; some were poor quality, others had over-dramatic musical soundtracks or some other rubbish added. I had to do quite a bit of searching until I eventually found a high-quality video with the original Japanese soundtrack and English sub-titles. I provide nothing but the best for Bad Astronomy readers! ;)</description>
		<content:encoded><![CDATA[<p>@ shane</p>
<p>Yeah, she is sultry. There were many versions of that video at various video hosting web-sites; some were poor quality, others had over-dramatic musical soundtracks or some other rubbish added. I had to do quite a bit of searching until I eventually found a high-quality video with the original Japanese soundtrack and English sub-titles. I provide nothing but the best for Bad Astronomy readers! <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_wink.gif' alt=';)' class='wp-smiley' /> </p>
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		<title>By: shane</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/comment-page-1/#comment-126337</link>
		<dc:creator>shane</dc:creator>
		<pubDate>Fri, 17 Oct 2008 07:54:40 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/#comment-126337</guid>
		<description>IVAN3MAN, yep. Stopped the shaking. Good to know that the apocalypse comes with sultry voiced Japanese voiceover though.</description>
		<content:encoded><![CDATA[<p>IVAN3MAN, yep. Stopped the shaking. Good to know that the apocalypse comes with sultry voiced Japanese voiceover though.</p>
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		<title>By: shane</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/comment-page-1/#comment-126335</link>
		<dc:creator>shane</dc:creator>
		<pubDate>Fri, 17 Oct 2008 07:47:24 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/#comment-126335</guid>
		<description>Damned frustrating seeing all these &quot;got mine&quot; posts from happy American customers. The delivery boy currently swimming across the Pacific will just have swim damned faster.</description>
		<content:encoded><![CDATA[<p>Damned frustrating seeing all these &#8220;got mine&#8221; posts from happy American customers. The delivery boy currently swimming across the Pacific will just have swim damned faster.</p>
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		<title>By: IVAN3MAN</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/comment-page-1/#comment-126334</link>
		<dc:creator>IVAN3MAN</dc:creator>
		<pubDate>Fri, 17 Oct 2008 07:45:28 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/#comment-126334</guid>
		<description>@ shane

You&#039;re welcome, mate. Are the pills working? :-)</description>
		<content:encoded><![CDATA[<p>@ shane</p>
<p>You&#8217;re welcome, mate. Are the pills working? <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' /> </p>
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		<title>By: Mike Torr</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/comment-page-1/#comment-126333</link>
		<dc:creator>Mike Torr</dc:creator>
		<pubDate>Fri, 17 Oct 2008 07:26:56 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/#comment-126333</guid>
		<description>That site is totally wonderful.  So thorough!  I&#039;m looking forward to reading even more detail in DftS though.  And on that topic -

Original (UK) Amazon delivery estimate was yesterday.  Today I get: &quot;Dear Customer, We&#039;re still trying to obtain...&quot;
:(</description>
		<content:encoded><![CDATA[<p>That site is totally wonderful.  So thorough!  I&#8217;m looking forward to reading even more detail in DftS though.  And on that topic -</p>
<p>Original (UK) Amazon delivery estimate was yesterday.  Today I get: &#8220;Dear Customer, We&#8217;re still trying to obtain&#8230;&#8221;<br />
 <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_sad.gif' alt=':(' class='wp-smiley' /> </p>
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		<title>By: Siguy</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/comment-page-1/#comment-126210</link>
		<dc:creator>Siguy</dc:creator>
		<pubDate>Thu, 16 Oct 2008 20:57:31 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/10/15/has-the-earth-been-destroyed-yet/#comment-126210</guid>
		<description>That is, in fact, one of my favorite websites. Serious scientific analysis combined with tongue in cheek humor. I&#039;ve known about it for a while. Haven&#039;t checked the Earth Advisory Board recently though-

Oh my god...</description>
		<content:encoded><![CDATA[<p>That is, in fact, one of my favorite websites. Serious scientific analysis combined with tongue in cheek humor. I&#8217;ve known about it for a while. Haven&#8217;t checked the Earth Advisory Board recently though-</p>
<p>Oh my god&#8230;</p>
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