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		<id>http://www.explainxkcd.com/wiki/index.php?title=847:_Stingray_Nebula&amp;feed=atom&amp;action=history</id>
		<title>847: Stingray Nebula - Revision history</title>
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		<updated>2013-06-19T01:59:37Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://www.explainxkcd.com/wiki/index.php?title=847:_Stingray_Nebula&amp;diff=35355&amp;oldid=prev</id>
		<title>Wwoods: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="http://www.explainxkcd.com/wiki/index.php?title=847:_Stingray_Nebula&amp;diff=35355&amp;oldid=prev"/>
				<updated>2013-04-27T17:26:42Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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			&lt;tr valign='top'&gt;
			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 17:26, 27 April 2013&lt;/td&gt;
			&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 8:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 8:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The {{w|Stingray Nebula}} is the youngest known planetary nebula in the galaxy. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;In 1987 it &lt;/del&gt;was an {{w|asymptotic giant branch}} (AGB) B1 {{w|supergiant}} &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;and then became &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Stingray Nebula &lt;/del&gt;in 1987. Well, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;didn't become that in 1987&lt;/del&gt;, the light of the incident reached the Earth in 1987.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The {{w|Stingray Nebula}}&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, in the constellation {{w|Ara (constellation)|Ara}}, &lt;/ins&gt;is the youngest known planetary nebula in the galaxy. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;It &lt;/ins&gt;was &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;formed by &lt;/ins&gt;an {{w|asymptotic giant branch}} (AGB) B1 {{w|supergiant}}&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, which blasted out &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;gas while becoming a {{w|white dwarf}} &lt;/ins&gt;in 1987. Well, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;it happened about 18,000 years ago&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;but &lt;/ins&gt;the light of the incident reached the Earth in 1987.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;This comic went from a reassuring comic about stars at night giving hope in the darkness, but then as with most xkcd's, it took a turn.&amp;#160; In this case, the twist is that because [[Cueball]]'s star he got attached to exploded into a nebula, we should only become attached to stars that aren't quite as volatile as the one that formed the Stingray Nebula.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;This comic went from a reassuring comic about stars at night giving hope in the darkness, but then as with most xkcd's, it took a turn.&amp;#160; In this case, the twist is that because [[Cueball]]'s star he got attached to exploded into a nebula, we should only become attached to stars that aren't quite as volatile as the one that formed the Stingray Nebula.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Wwoods</name></author>	</entry>

	<entry>
		<id>http://www.explainxkcd.com/wiki/index.php?title=847:_Stingray_Nebula&amp;diff=22088&amp;oldid=prev</id>
		<title>Lcarsos: created page using new create (sans imagesize!) included explanation from blog, included a transcript, added links to wikipedia</title>
		<link rel="alternate" type="text/html" href="http://www.explainxkcd.com/wiki/index.php?title=847:_Stingray_Nebula&amp;diff=22088&amp;oldid=prev"/>
				<updated>2012-12-05T22:28:06Z</updated>
		
		<summary type="html">&lt;p&gt;created page using new create (sans imagesize!) included explanation from blog, included a transcript, added links to wikipedia&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{comic&lt;br /&gt;
| number    = 847&lt;br /&gt;
| date      = January 14, 2011&lt;br /&gt;
| title     = Stingray Nebula&lt;br /&gt;
| image     = stingray_nebula.png&lt;br /&gt;
| titletext = Eärendil will patrol the walls of night only until the sun reaches red giant stage, engulfing the Morning Star on his brow. Light and high beauty are passing things as well.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
The {{w|Stingray Nebula}} is the youngest known planetary nebula in the galaxy. In 1987 it was an {{w|asymptotic giant branch}} (AGB) B1 {{w|supergiant}} and then became the Stingray Nebula in 1987. Well, didn't become that in 1987, the light of the incident reached the Earth in 1987.&lt;br /&gt;
&lt;br /&gt;
This comic went from a reassuring comic about stars at night giving hope in the darkness, but then as with most xkcd's, it took a turn.  In this case, the twist is that because [[Cueball]]'s star he got attached to exploded into a nebula, we should only become attached to stars that aren't quite as volatile as the one that formed the Stingray Nebula.&lt;br /&gt;
&lt;br /&gt;
{{w|Earendil}}, with a {{w|Silmaril}} strapped to his forehead, is the {{w|Tolkein}}ian myth explanation for the planet {{w|Venus}}.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Two white figures are silhouetted against a dark sky. They're sitting on top of a grassy hill.]&lt;br /&gt;
:Cueball: I know things are tough right now. When I was going through some difficult times as a kid, I would go up on the roof and look through my telescope.&lt;br /&gt;
&lt;br /&gt;
:Cueball: One day I found a tiny star in Ara that seemed friendly.&lt;br /&gt;
:Cueball: There were millions like it, but I decided that this one was mine.&lt;br /&gt;
&lt;br /&gt;
:Cueball: When things got bad, I'd go find that star, and think of my favorite Tolkien quote. It's from Sam's time in Mordor.&lt;br /&gt;
&lt;br /&gt;
:(The next panel is diagonally downward to the right of the previous. The upper left corner overlaps.)&lt;br /&gt;
:[A star is above the highest peak in a chain of mountains.]&lt;br /&gt;
:&amp;quot;There, peeping among the cloud-wrack above a dark tor high up in the mountains, Sam saw a white star twinkle for a while. The beauty of it smote his heart, as he looked up out of the forsaken land, and hope returned to him. For like a shaft, clear and cold, the thought pierced him that in the end the shadow was only a small and passing thing: There was light and high beauty forever beyond its reach.&amp;quot;&lt;br /&gt;
:&amp;amp;mdash;The Return of the King&lt;br /&gt;
&lt;br /&gt;
:Companion: That's comforting!&lt;br /&gt;
:Cueball: It was rather undercut in 1987, when the light from my star's explosion reached Earth. The debris forms the Stingray Nebula.&lt;br /&gt;
&lt;br /&gt;
:Companion: There's probably a lesson there.&lt;br /&gt;
:Cueball: &amp;quot;Never trust an unstable asymptotic giant branch star. Stick with main sequences and dwarfs.&amp;quot;&lt;br /&gt;
:Companion: I'll, uh, keep that in mind.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}} &lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:LOTR]]&lt;br /&gt;
[[Category:Philosophy]]&lt;/div&gt;</summary>
		<author><name>Lcarsos</name></author>	</entry>

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