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	<title>Comments on: Our galactic twin</title>
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	<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/</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: Yeebok</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-325561</link>
		<dc:creator>Yeebok</dc:creator>
		<pubDate>Thu, 28 Oct 2010 06:53:48 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-325561</guid>
		<description>@24/37 - Shane,
Mate being a southerner (I&#039;m in Australia) there&#039;s a lot of cool stuff you can see with the naked eye. If you point the galileoscope near Crux and have a run up to Carina, you&#039;ll be honestly amazed. Then there&#039;s Omega Centauri, 47 Tucana, 2 of the better globulars imho, and lastly not much in the sky compares to the LMC and SMC. Andromeda is visible but you&#039;ll need a low horizon.
Trust me we have a better selection of sky, just a smaller selection of related websites. I don&#039;t think we&#039;re missing much by not seeing the big dipper, put it that way.</description>
		<content:encoded><![CDATA[<p>@24/37 &#8211; Shane,<br />
Mate being a southerner (I&#8217;m in Australia) there&#8217;s a lot of cool stuff you can see with the naked eye. If you point the galileoscope near Crux and have a run up to Carina, you&#8217;ll be honestly amazed. Then there&#8217;s Omega Centauri, 47 Tucana, 2 of the better globulars imho, and lastly not much in the sky compares to the LMC and SMC. Andromeda is visible but you&#8217;ll need a low horizon.<br />
Trust me we have a better selection of sky, just a smaller selection of related websites. I don&#8217;t think we&#8217;re missing much by not seeing the big dipper, put it that way.</p>
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		<title>By: Mark  Hansen</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210607</link>
		<dc:creator>Mark  Hansen</dc:creator>
		<pubDate>Fri, 04 Sep 2009 14:50:10 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210607</guid>
		<description>@Ivan,
What shane said. Also, it&#039;s a bit like the TV; if you don&#039;t like what&#039;s on the channel, you can change the channel or turn it off. I don&#039;t know of anyone having a gun held to their head to visit here.</description>
		<content:encoded><![CDATA[<p>@Ivan,<br />
What shane said. Also, it&#8217;s a bit like the TV; if you don&#8217;t like what&#8217;s on the channel, you can change the channel or turn it off. I don&#8217;t know of anyone having a gun held to their head to visit here.</p>
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		<title>By: shane</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210551</link>
		<dc:creator>shane</dc:creator>
		<pubDate>Fri, 04 Sep 2009 02:47:21 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210551</guid>
		<description>@Ivan
http://blogs.discovermagazine.com/badastronomy/2007/07/15/politics-science-me-and-thee/</description>
		<content:encoded><![CDATA[<p>@Ivan<br />
<a href="http://blogs.discovermagazine.com/badastronomy/2007/07/15/politics-science-me-and-thee/" rel="nofollow">http://blogs.discovermagazine.com/badastronomy/2007/07/15/politics-science-me-and-thee/</a></p>
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		<title>By: Ivan</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210548</link>
		<dc:creator>Ivan</dc:creator>
		<pubDate>Fri, 04 Sep 2009 01:33:29 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210548</guid>
		<description>@mark 

im mostly talking about all the antivax and skeptic articles.</description>
		<content:encoded><![CDATA[<p>@mark </p>
<p>im mostly talking about all the antivax and skeptic articles.</p>
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		<title>By: toasterhead</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210494</link>
		<dc:creator>toasterhead</dc:creator>
		<pubDate>Thu, 03 Sep 2009 20:50:30 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210494</guid>
		<description>&lt;i&gt;33.   Jason Says: 
September 3rd, 2009 at 1:51 pm 

In the end, I take it as a matter of faith. As must you for your view. I cannot provide “concrete irrefutable proof” that God is the creator and architect. But neither can you prove that an infinite being did not create and direct the universe.&lt;/i&gt;
________________

I cannot prove a negative, no.  You are right.  But if there is a creator and architect to the universe, what did he/she create, exactly?  How is he/she directing it, exactly?  

He/she didn&#039;t create stars and planets.  We can see them forming in nebulas in our own galaxy by natural forces, so we can conclude that there is no outside force that forms stars and planets.  He/she didn&#039;t create galaxies, because we can see them in the deep field Hubble images and see them forming naturally due to gravitational and electromagnetic forces.  We can even see the background radiation from before the energy of the universe had settled down into matter, and there are no patterns that indicate the hand of a designer.  

And it becomes even fuzzier if we start thinking about God the director.  The events that happen in the universe around us all seem to happen as predicted due to the forces we can measure.  When stars run out of fuel, they collapse or go nova, depending on their size and composition.  Expansion pulls galaxies away from each other, unless they&#039;re close enough and gravity pulls them toward each other.  On the whole, stuff out there behaves the way it should.  God is either an extremely neurotic micromanager or a very hands-off director.  Sure, there are still plenty of mysteries, but do you really want to plug God into those gaps as a holy placeholder?  

All that&#039;s really left is the constants.  You can believe that God said &quot;Let There Be Light, and Let Its Velocity Be 299,792,458 Meters Per Second In A Vacuum.&quot;  But why?  Is that the optimal speed for light to travel?  Is it the most likely to produce life?  Is it just random, or chosen on a whim?  Is it an experiment - will the next universe have a speed of light of 299,792,459 m/s, and so on?

Ultimately, it&#039;s a philosophical question, and the answer depends on what you want your God to be.  You&#039;re welcome to see him/her as you please.  Personally, I don&#039;t want my God to be a neurotic director or an experimenting cosmologician or that vindictive jerk from the Old Testament.</description>
		<content:encoded><![CDATA[<p><i>33.   Jason Says:<br />
September 3rd, 2009 at 1:51 pm </p>
<p>In the end, I take it as a matter of faith. As must you for your view. I cannot provide “concrete irrefutable proof” that God is the creator and architect. But neither can you prove that an infinite being did not create and direct the universe.</i><br />
________________</p>
<p>I cannot prove a negative, no.  You are right.  But if there is a creator and architect to the universe, what did he/she create, exactly?  How is he/she directing it, exactly?  </p>
<p>He/she didn&#8217;t create stars and planets.  We can see them forming in nebulas in our own galaxy by natural forces, so we can conclude that there is no outside force that forms stars and planets.  He/she didn&#8217;t create galaxies, because we can see them in the deep field Hubble images and see them forming naturally due to gravitational and electromagnetic forces.  We can even see the background radiation from before the energy of the universe had settled down into matter, and there are no patterns that indicate the hand of a designer.  </p>
<p>And it becomes even fuzzier if we start thinking about God the director.  The events that happen in the universe around us all seem to happen as predicted due to the forces we can measure.  When stars run out of fuel, they collapse or go nova, depending on their size and composition.  Expansion pulls galaxies away from each other, unless they&#8217;re close enough and gravity pulls them toward each other.  On the whole, stuff out there behaves the way it should.  God is either an extremely neurotic micromanager or a very hands-off director.  Sure, there are still plenty of mysteries, but do you really want to plug God into those gaps as a holy placeholder?  </p>
<p>All that&#8217;s really left is the constants.  You can believe that God said &#8220;Let There Be Light, and Let Its Velocity Be 299,792,458 Meters Per Second In A Vacuum.&#8221;  But why?  Is that the optimal speed for light to travel?  Is it the most likely to produce life?  Is it just random, or chosen on a whim?  Is it an experiment &#8211; will the next universe have a speed of light of 299,792,459 m/s, and so on?</p>
<p>Ultimately, it&#8217;s a philosophical question, and the answer depends on what you want your God to be.  You&#8217;re welcome to see him/her as you please.  Personally, I don&#8217;t want my God to be a neurotic director or an experimenting cosmologician or that vindictive jerk from the Old Testament.</p>
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		<title>By: Jason</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210482</link>
		<dc:creator>Jason</dc:creator>
		<pubDate>Thu, 03 Sep 2009 19:51:27 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210482</guid>
		<description>Of course the universe is a dangerous and Deadly place, I never suggested it wasn&#039;t, nor did I suggest the beauty and intricate design was all &quot;rainbows and Unicorns&quot;
In fact I could point out that this only enhances my argument.  Look at all the conditions that must balance just right to make life here not only possible, but enjoyable.
--The counter argument is that life evolved here so naturally we find it the best environment.  If we had evolved on Titan we would say the same thing about it.
In the end, I take it as a matter of faith.  As must you for your view.  I cannot provide &quot;concrete irrefutable proof&quot; that God is the creator and architect.  But neither can you prove that an infinite being did not create and direct the universe.

I do see each discovery, each new thing Humanity learns as expanding our knowledge and Understanding of this wonderous creation.</description>
		<content:encoded><![CDATA[<p>Of course the universe is a dangerous and Deadly place, I never suggested it wasn&#8217;t, nor did I suggest the beauty and intricate design was all &#8220;rainbows and Unicorns&#8221;<br />
In fact I could point out that this only enhances my argument.  Look at all the conditions that must balance just right to make life here not only possible, but enjoyable.<br />
&#8211;The counter argument is that life evolved here so naturally we find it the best environment.  If we had evolved on Titan we would say the same thing about it.<br />
In the end, I take it as a matter of faith.  As must you for your view.  I cannot provide &#8220;concrete irrefutable proof&#8221; that God is the creator and architect.  But neither can you prove that an infinite being did not create and direct the universe.</p>
<p>I do see each discovery, each new thing Humanity learns as expanding our knowledge and Understanding of this wonderous creation.</p>
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		<title>By: toasterhead</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210475</link>
		<dc:creator>toasterhead</dc:creator>
		<pubDate>Thu, 03 Sep 2009 19:17:54 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210475</guid>
		<description>&lt;i&gt;31.   TechyDad Says: 
September 3rd, 2009 at 12:52 pm 

But don’t let it fool you into thinking it’s all rainbows and unicorns, because the universe is also a very deadly place also.
&lt;/i&gt;

Pfff don&#039;t even get me started on unicorns.  Vicious little buggers, they are...</description>
		<content:encoded><![CDATA[<p><i>31.   TechyDad Says:<br />
September 3rd, 2009 at 12:52 pm </p>
<p>But don’t let it fool you into thinking it’s all rainbows and unicorns, because the universe is also a very deadly place also.<br />
</i></p>
<p>Pfff don&#8217;t even get me started on unicorns.  Vicious little buggers, they are&#8230;</p>
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		<title>By: TechyDad</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210471</link>
		<dc:creator>TechyDad</dc:creator>
		<pubDate>Thu, 03 Sep 2009 18:52:55 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210471</guid>
		<description>@toasterhead,

I&#039;d add that, in much the same way that a gambler might &quot;forget&quot; his fifty losing hands, look at his ten winning hands, and conclude that the night went very well, we &quot;forget&quot; about all the deadly/dangerous aspects of the universe and focus on the &quot;pretty&quot; aspects of it.  So, yes, the universe is a very beautiful place.  But don&#039;t let it fool you into thinking it&#039;s all rainbows and unicorns, because the universe is also a very deadly place also.</description>
		<content:encoded><![CDATA[<p>@toasterhead,</p>
<p>I&#8217;d add that, in much the same way that a gambler might &#8220;forget&#8221; his fifty losing hands, look at his ten winning hands, and conclude that the night went very well, we &#8220;forget&#8221; about all the deadly/dangerous aspects of the universe and focus on the &#8220;pretty&#8221; aspects of it.  So, yes, the universe is a very beautiful place.  But don&#8217;t let it fool you into thinking it&#8217;s all rainbows and unicorns, because the universe is also a very deadly place also.</p>
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		<title>By: toasterhead</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210459</link>
		<dc:creator>toasterhead</dc:creator>
		<pubDate>Thu, 03 Sep 2009 18:09:51 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210459</guid>
		<description>&lt;i&gt;28.   Jason Says: 
September 3rd, 2009 at 9:27 am 

You look at the universe and say, Wow look how beautiful and awesome everything turned out.
Yet I look at the universe and think, “How can you see such an incredibly complex, (and moreso the more we learn) Universe and not see that it was supremely designed?&lt;/i&gt;
___________

Simple.  Because there is no evidence that it was supremely designed.  In fact, there&#039;s no evidence of design, period.  

These things like stars and galaxies and nebulae are not inherently beautiful.  In fact, they&#039;re quite ugly and frightening up close.   

Stars are giant balls of plasma that put out all sorts of harmful and deadly radiation.  Galaxies are collections of stars orbiting supermassive blackholes that could, according to the Drake equation, be massacring thousands if not millions of civilizations as they suck the life out of stars near the hub.  Nebulae are huge inhospitable clouds of poisonous gases and dust left over from the violent and cataclysmic death of a star.

They&#039;re only beautiful because our human eyes like colors, and because our human brains like patterns and order and recognizable shapes.  That&#039;s not evidence of design, that&#039;s evidence of interpretation.  

Quite simply, there is no evidence that the universe or our solar system or life on Earth was designed in any way.  There&#039;s plenty of evidence that these things arrived at their present state due to natural forces, but no evidence of design.  In fact, there&#039;s no evidence that it was created.  </description>
		<content:encoded><![CDATA[<p><i>28.   Jason Says:<br />
September 3rd, 2009 at 9:27 am </p>
<p>You look at the universe and say, Wow look how beautiful and awesome everything turned out.<br />
Yet I look at the universe and think, “How can you see such an incredibly complex, (and moreso the more we learn) Universe and not see that it was supremely designed?</i><br />
___________</p>
<p>Simple.  Because there is no evidence that it was supremely designed.  In fact, there&#8217;s no evidence of design, period.  </p>
<p>These things like stars and galaxies and nebulae are not inherently beautiful.  In fact, they&#8217;re quite ugly and frightening up close.   </p>
<p>Stars are giant balls of plasma that put out all sorts of harmful and deadly radiation.  Galaxies are collections of stars orbiting supermassive blackholes that could, according to the Drake equation, be massacring thousands if not millions of civilizations as they suck the life out of stars near the hub.  Nebulae are huge inhospitable clouds of poisonous gases and dust left over from the violent and cataclysmic death of a star.</p>
<p>They&#8217;re only beautiful because our human eyes like colors, and because our human brains like patterns and order and recognizable shapes.  That&#8217;s not evidence of design, that&#8217;s evidence of interpretation.  </p>
<p>Quite simply, there is no evidence that the universe or our solar system or life on Earth was designed in any way.  There&#8217;s plenty of evidence that these things arrived at their present state due to natural forces, but no evidence of design.  In fact, there&#8217;s no evidence that it was created.</p>
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		<title>By: IVAN3MAN</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210442</link>
		<dc:creator>IVAN3MAN</dc:creator>
		<pubDate>Thu, 03 Sep 2009 16:58:33 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210442</guid>
		<description>@ Jason,

Two words:  &lt;a href=&quot;http://en.wikipedia.org/wiki/Creation_myth&quot; target=&quot;_blank&quot; rel=&quot;nofollow&quot;&gt;&lt;font color=&quot;blue&quot;&gt;&lt;strong&gt;&lt;u&gt;Creation myth&lt;/u&gt;&lt;/strong&gt;&lt;/font&gt;&lt;/a&gt;.

&lt;small&gt;&lt;b&gt;Hint: Click the link and scroll down -- it&#039;s a bloody long list!&lt;/b&gt;&lt;/small&gt;


</description>
		<content:encoded><![CDATA[<p>@ Jason,</p>
<p>Two words:  <a href="http://en.wikipedia.org/wiki/Creation_myth" target="_blank" rel="nofollow"><font color="blue"><strong><u>Creation myth</u></strong></font></a>.</p>
<p><small><b>Hint: Click the link and scroll down &#8212; it&#8217;s a bloody long list!</b></small></p>
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		<title>By: turnley</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210435</link>
		<dc:creator>turnley</dc:creator>
		<pubDate>Thu, 03 Sep 2009 16:29:00 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210435</guid>
		<description>I was surprised to learn that nearby galaxies are so large in the sky.  I always assumed they were too far away.

Thinking about NGC 4945...

If I start with knowing how big it must be, then I am amazed how far it must be from us.

If I start with knowing how far away it is, I am amazed how big it must be.</description>
		<content:encoded><![CDATA[<p>I was surprised to learn that nearby galaxies are so large in the sky.  I always assumed they were too far away.</p>
<p>Thinking about NGC 4945&#8230;</p>
<p>If I start with knowing how big it must be, then I am amazed how far it must be from us.</p>
<p>If I start with knowing how far away it is, I am amazed how big it must be.</p>
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		<title>By: Jason</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210422</link>
		<dc:creator>Jason</dc:creator>
		<pubDate>Thu, 03 Sep 2009 15:27:54 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210422</guid>
		<description>Phil
I enjoy your site and blog, and have always had a fascination with Astronomy and science in general.
And yet, I am a firm believer in the Bible and God and Jesus Christ.   I admit I do not have all the answers of how to reconcile the Bible and its accounts with what our observations of the Universe indicate with its age etc.  
You look at the universe and say, Wow look how beautiful and awesome everything turned out.
Yet I look at the universe and think, &quot;How can you see such an incredibly complex, (and moreso the more we learn) Universe and not see that it was supremely designed?
Do I think the universe is 6,000 years old?  14billion years (or so). I am not sure. 
I do believe it was Created by God, all of it, regardless of how or when he did it.
(I could talk on this for awhile, but this is a comment section, not an essay).</description>
		<content:encoded><![CDATA[<p>Phil<br />
I enjoy your site and blog, and have always had a fascination with Astronomy and science in general.<br />
And yet, I am a firm believer in the Bible and God and Jesus Christ.   I admit I do not have all the answers of how to reconcile the Bible and its accounts with what our observations of the Universe indicate with its age etc.<br />
You look at the universe and say, Wow look how beautiful and awesome everything turned out.<br />
Yet I look at the universe and think, &#8220;How can you see such an incredibly complex, (and moreso the more we learn) Universe and not see that it was supremely designed?<br />
Do I think the universe is 6,000 years old?  14billion years (or so). I am not sure.<br />
I do believe it was Created by God, all of it, regardless of how or when he did it.<br />
(I could talk on this for awhile, but this is a comment section, not an essay).</p>
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		<title>By: Eidolon</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210394</link>
		<dc:creator>Eidolon</dc:creator>
		<pubDate>Thu, 03 Sep 2009 11:49:17 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210394</guid>
		<description>I&#039;ve always enjoyed photos of galaxies with lots of foreground stars. I get a much greater sensation of looking &quot;out&quot; at the object. I&#039;m not as aware of that at the eyepiece, since these images go much fainter - and hence more stars - than you get visually. 

I also find it interesting that even if we could get closer, it would still not look the way it does in images. Think about the Milky Way. That&#039;s what galaxies look like up close.</description>
		<content:encoded><![CDATA[<p>I&#8217;ve always enjoyed photos of galaxies with lots of foreground stars. I get a much greater sensation of looking &#8220;out&#8221; at the object. I&#8217;m not as aware of that at the eyepiece, since these images go much fainter &#8211; and hence more stars &#8211; than you get visually. </p>
<p>I also find it interesting that even if we could get closer, it would still not look the way it does in images. Think about the Milky Way. That&#8217;s what galaxies look like up close.</p>
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		<title>By: MichaelL</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210371</link>
		<dc:creator>MichaelL</dc:creator>
		<pubDate>Thu, 03 Sep 2009 06:06:00 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210371</guid>
		<description>Does that mean I have a doppelganger in that Galaxy?   &#039;Cause that would be scary!</description>
		<content:encoded><![CDATA[<p>Does that mean I have a doppelganger in that Galaxy?   &#8216;Cause that would be scary!</p>
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		<title>By: kuhnigget</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210361</link>
		<dc:creator>kuhnigget</dc:creator>
		<pubDate>Thu, 03 Sep 2009 03:15:08 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210361</guid>
		<description>@ Shane:

Mind you don&#039;t fall off the planet while you&#039;re messing around down there.   ;)

Seriously, tho. Way jealous at being able to see the Magellanic Clouds. Omega Centauri, I should think, would also be a good target for that Galileoscope.</description>
		<content:encoded><![CDATA[<p>@ Shane:</p>
<p>Mind you don&#8217;t fall off the planet while you&#8217;re messing around down there.   <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_wink.gif' alt=';)' class='wp-smiley' /> </p>
<p>Seriously, tho. Way jealous at being able to see the Magellanic Clouds. Omega Centauri, I should think, would also be a good target for that Galileoscope.</p>
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		<title>By: shane</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210358</link>
		<dc:creator>shane</dc:creator>
		<pubDate>Thu, 03 Sep 2009 02:50:49 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210358</guid>
		<description>Thanks.
I was hoping to point the ol&#039; Galileoscope at Andromeda but it may be too low in the sky for us Southern Hemispheroids. I&#039;ll just have to make do with the Magellanic clouds.</description>
		<content:encoded><![CDATA[<p>Thanks.<br />
I was hoping to point the ol&#8217; Galileoscope at Andromeda but it may be too low in the sky for us Southern Hemispheroids. I&#8217;ll just have to make do with the Magellanic clouds.</p>
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		<title>By: Mark  Hansen</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210357</link>
		<dc:creator>Mark  Hansen</dc:creator>
		<pubDate>Thu, 03 Sep 2009 02:47:22 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210357</guid>
		<description>Ivan ( post 21(not ivan3man)), what, the ISS isn&#039;t related to astronomy? Fires threatening to consume an observatory aren&#039;t astronomy related? 118th carnival of space not related to astronomy?</description>
		<content:encoded><![CDATA[<p>Ivan ( post 21(not ivan3man)), what, the ISS isn&#8217;t related to astronomy? Fires threatening to consume an observatory aren&#8217;t astronomy related? 118th carnival of space not related to astronomy?</p>
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		<title>By: KevAtBryce</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210353</link>
		<dc:creator>KevAtBryce</dc:creator>
		<pubDate>Thu, 03 Sep 2009 02:29:07 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210353</guid>
		<description>@ Matt:

The other reason they use filters is that the vast majority of &quot;ordinary&quot; digital cameras use colored filters (red, green, blue) alternating over the pixels - the &quot;picture elements&quot; themselves are actually monochromatic - the camera&#039;s software then blends it all together for the final image that you see. But this sacrifices some image detail since you are only using 1/3 of the available pixels in the sensor for each color, then the camera averages it all together. That&#039;s the main reason why more megapixels is better.

By imaging astronomical objects using separate filters placed over a monochromatic imaging sensor, astronomers get more detail in the images since ALL the pixels in the sensor are available for each wavelength. Obviously it takes longer to expose since it has to be done for each filter, instead of all at once, then an imaging specialist will blend it all together in software back at the computer lab to create the final amazing image BA shares with us.</description>
		<content:encoded><![CDATA[<p>@ Matt:</p>
<p>The other reason they use filters is that the vast majority of &#8220;ordinary&#8221; digital cameras use colored filters (red, green, blue) alternating over the pixels &#8211; the &#8220;picture elements&#8221; themselves are actually monochromatic &#8211; the camera&#8217;s software then blends it all together for the final image that you see. But this sacrifices some image detail since you are only using 1/3 of the available pixels in the sensor for each color, then the camera averages it all together. That&#8217;s the main reason why more megapixels is better.</p>
<p>By imaging astronomical objects using separate filters placed over a monochromatic imaging sensor, astronomers get more detail in the images since ALL the pixels in the sensor are available for each wavelength. Obviously it takes longer to expose since it has to be done for each filter, instead of all at once, then an imaging specialist will blend it all together in software back at the computer lab to create the final amazing image BA shares with us.</p>
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		<title>By: Ivan</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210352</link>
		<dc:creator>Ivan</dc:creator>
		<pubDate>Thu, 03 Sep 2009 02:25:16 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210352</guid>
		<description>finally.  some astronomy.</description>
		<content:encoded><![CDATA[<p>finally.  some astronomy.</p>
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		<title>By: Owen</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210346</link>
		<dc:creator>Owen</dc:creator>
		<pubDate>Thu, 03 Sep 2009 01:17:01 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210346</guid>
		<description>Came across this video while looking up the one suggested by Caleb Jones (#13), and it&#039;s also a great illustrator of why visible light isn&#039;t as useful or interesting by switching back and forth between the two, allowing you to see inside concealing clouds of dust. Great stuff.

http://www.youtube.com/watch?v=Rm3Sj8qAaWg&amp;feature=channel</description>
		<content:encoded><![CDATA[<p>Came across this video while looking up the one suggested by Caleb Jones (#13), and it&#8217;s also a great illustrator of why visible light isn&#8217;t as useful or interesting by switching back and forth between the two, allowing you to see inside concealing clouds of dust. Great stuff.</p>
<p><a href="http://www.youtube.com/watch?v=Rm3Sj8qAaWg&#038;feature=channel" rel="nofollow">http://www.youtube.com/watch?v=Rm3Sj8qAaWg&#038;feature=channel</a></p>
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		<title>By: IVAN3MAN</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210344</link>
		<dc:creator>IVAN3MAN</dc:creator>
		<pubDate>Thu, 03 Sep 2009 01:04:44 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210344</guid>
		<description>&lt;i&gt;To give you a sense of scale, the full Moon would just fit in this image, so we really can see very fine detail in the galaxy.&lt;/i&gt;

The Angular Diameter of the Moon&lt;font color=&quot;red&quot;&gt;*&lt;/font&gt; is &lt;b&gt;29.3&lt;/b&gt; to &lt;b&gt;34.1&lt;/b&gt; &lt;a href=&quot;http://en.wikipedia.org/wiki/Minute_of_arc&quot; target=&quot;_blank&quot; rel=&quot;nofollow&quot;&gt;&lt;font color=&quot;blue&quot;&gt;&lt;u&gt;arcminutes&lt;/u&gt;&lt;/font&gt;&lt;/a&gt;; the Major Diameter of &lt;a href=&quot;http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC4945&amp;extend=no&quot; target=&quot;_blank&quot; rel=&quot;nofollow&quot;&gt;&lt;font color=&quot;blue&quot; face=&quot;Arial&quot;&gt;&lt;b&gt;&lt;u&gt;NGC 4945&lt;/u&gt;&lt;/b&gt;&lt;/font&gt;&lt;/a&gt; is &lt;b&gt;20.0&lt;/b&gt; arcminutes and the Minor Diameter is &lt;b&gt;3.8&lt;/b&gt; arcminutes.

So, if &lt;font face=&quot;Arial&quot;&gt;&lt;b&gt;NGC 4945&lt;/b&gt;&lt;/font&gt; was bright enough to see with the naked eye, it would appear about &lt;b&gt;2/3&lt;/b&gt; the diameter of the Full Moon.

&lt;font color=&quot;red&quot;&gt;*&lt;/font&gt;&lt;small&gt;Source: Wikipedia -- Moon.&lt;/small&gt;</description>
		<content:encoded><![CDATA[<p><i>To give you a sense of scale, the full Moon would just fit in this image, so we really can see very fine detail in the galaxy.</i></p>
<p>The Angular Diameter of the Moon<font color="red">*</font> is <b>29.3</b> to <b>34.1</b> <a href="http://en.wikipedia.org/wiki/Minute_of_arc" target="_blank" rel="nofollow"><font color="blue"><u>arcminutes</u></font></a>; the Major Diameter of <a href="http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC4945&#038;extend=no" target="_blank" rel="nofollow"><font color="blue" face="Arial"><b><u>NGC 4945</u></b></font></a> is <b>20.0</b> arcminutes and the Minor Diameter is <b>3.8</b> arcminutes.</p>
<p>So, if <font face="Arial"><b>NGC 4945</b></font> was bright enough to see with the naked eye, it would appear about <b>2/3</b> the diameter of the Full Moon.</p>
<p><font color="red">*</font><small>Source: Wikipedia &#8212; Moon.</small></p>
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		<title>By: kuhnigget</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210343</link>
		<dc:creator>kuhnigget</dc:creator>
		<pubDate>Thu, 03 Sep 2009 00:58:05 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210343</guid>
		<description>In a good set of binocs and with a dark night you can make out the Andromeda galaxy across nearly 4° of sky, or about 8 times the diameter of the full moon.  That&#039;s a serious &lt;i&gt;whoa.&lt;/i&gt;</description>
		<content:encoded><![CDATA[<p>In a good set of binocs and with a dark night you can make out the Andromeda galaxy across nearly 4° of sky, or about 8 times the diameter of the full moon.  That&#8217;s a serious <i>whoa.</i></p>
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		<title>By: shane</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210330</link>
		<dc:creator>shane</dc:creator>
		<pubDate>Wed, 02 Sep 2009 23:41:52 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210330</guid>
		<description>&lt;i&gt;To give you a sense of scale, the full Moon would just fit in this image, so we really can see very fine detail in the galaxy.&lt;/i&gt;

I&#039;m a little confused too. Does this mean that if it was bright enough to see with the naked eye it would cover as much sky as the full moon? If so, holy smoke.</description>
		<content:encoded><![CDATA[<p><i>To give you a sense of scale, the full Moon would just fit in this image, so we really can see very fine detail in the galaxy.</i></p>
<p>I&#8217;m a little confused too. Does this mean that if it was bright enough to see with the naked eye it would cover as much sky as the full moon? If so, holy smoke.</p>
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		<title>By: Alexa</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210328</link>
		<dc:creator>Alexa</dc:creator>
		<pubDate>Wed, 02 Sep 2009 23:36:21 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210328</guid>
		<description>Woah. That&#039;s gotta be photoshopped. LOLL</description>
		<content:encoded><![CDATA[<p>Woah. That&#8217;s gotta be photoshopped. LOLL</p>
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		<title>By: AJA</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/comment-page-1/#comment-210303</link>
		<dc:creator>AJA</dc:creator>
		<pubDate>Wed, 02 Sep 2009 21:16:06 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2009/09/02/our-galactic-twin/#comment-210303</guid>
		<description>Finally! Someone else puts it in the right terms - &quot;How poetic the cosmos is..&quot;. And we&#039;re learning all this from nothing but &#039;light and shadow&#039;. What&#039;s even more mindboggling is that something that &#039;came out of a black hole&#039; (yeah yeah [sic] as much as you want :P) like that is capable of looking at something else, and _thinking_ about the whole process.</description>
		<content:encoded><![CDATA[<p>Finally! Someone else puts it in the right terms &#8211; &#8220;How poetic the cosmos is..&#8221;. And we&#8217;re learning all this from nothing but &#8216;light and shadow&#8217;. What&#8217;s even more mindboggling is that something that &#8216;came out of a black hole&#8217; (yeah yeah [sic] as much as you want <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_razz.gif' alt=':P' class='wp-smiley' /> ) like that is capable of looking at something else, and _thinking_ about the whole process.</p>
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