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Explain xkcd: It's 'cause you're dumb.
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(Try to put contribution score back in to see if this will cause any problems. Sinde the problems we had when I removed it did not stop just because I moved it it may have had nothing to do with it)
 
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<font size=5px>''Welcome to the '''explain [[xkcd]]''' wiki!''</font>
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<font size=5px>''Welcome to the '''explain [[xkcd]]''' wiki!''</font><br>
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<span style="font size:210%;">We have an explanation for all [[List of all comics (full)|'''{{#expr:{{PAGESINCAT:All comics|R}}}}''' xkcd comics]], and only {{PAGESINCAT:Incomplete explanations|R}} ({{#expr: {{PAGESINCAT:Incomplete explanations|R}} / {{LATESTCOMIC}} * 100 round 1}}%) are incomplete. [[:Category:Incomplete explanations|Help us finish them!]]</span><!-- Note: the -1 in the calculation above has been removed (it was there to discount "comic" 404, but we've categorized it to be a comic and so has Randall.) -->
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<!-- Go to this explanation button --><span style="position: absolute; right:0; padding-top:1.4em; font-size: 100%;"><span class="no-link-underline">[[{{LATESTCOMIC}}|&nbsp;</span>'''Go to this explanation''']]</span>
  
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=Latest comic=
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    as well as [[List of all comics]], which is obviously not a comic page. -->
 
and only {{#expr:{{LATESTCOMIC}}-({{PAGESINCAT:Comics}}-9)}}
 
({{#expr: ({{LATESTCOMIC}}-({{PAGESINCAT:Comics}}-9)) / ({{PAGESINCAT:Comics}}-9) * 100 round 0}}%)
 
remain. '''[[Help:How to add a new comic explanation|Add yours]]''' while there's a chance!
 
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== Latest comic ==
 
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<span style="position: absolute; left:0; padding-top:1.35em; font-size: 105%;"><span class="no-link-underline">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[[File:new topic.png|21x21px|link={{LATESTCOMIC}}#Discussion]][[{{LATESTCOMIC}}#Discussion|&nbsp; </span>'''View comic discussion''']]</span><br><br></div>
  
 
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You can read a brief introduction about this wiki at [[explain xkcd]]. Feel free to sign up for an account and contribute to the wiki! We need explanations for comics, characters, themes, memes and everything in between. If it is referenced in an [[xkcd]] web comic, it should be here.
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<div style="float:right; margin: 0 0 1em 1em">{{Special:ContributionScores/10/7/nosort,notools}}<div style="font-size:0.85em; width:28em; font-style:italic">[[Special:ContributionScores|Lots of people]] contribute to make this wiki a success. Many of the recent contributors above have [{{fullurl:Special:Contributions|contribs=newbie}} just joined]. You can do it too! Create your account [[Special:UserLogin/signup|here]].</div></div>
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You can read a brief introduction about this wiki at [[explain xkcd]]. Feel free to [[Special:UserLogin/signup|create an account]] and contribute to the wiki! We need explanations for xkcd [[:Category:Incomplete explanations|comics]], [[:Category:Characters|characters]], [[What If? chapters|''What If?'' articles]], and [[:Category:xkcd|everything in between]]. If it is referenced in an [[xkcd]] comic, it should be here.
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* If you're new to wiki editing, see the [[explain xkcd:Editor FAQ]] for a specific guidance to this wiki and the more general help on [[mw:Help:Editing pages|how to edit wiki pages]]. There's also a handy {{w|Help:Cheatsheet|wikicode cheatsheet}}.
  
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* The incomplete explanations are listed [[:Category:Incomplete explanations|here]]. Feel free to help out by expanding them!
  
 
== Rules ==
 
== Rules ==
Don't be a jerk. There are a lot of comics that don't have set in stone explanations; feel free to put multiple interpretations in the wiki page for each comic.
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Don't be a jerk!
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There are a lot of comics that don't have set-in-stone explanations; feel free to put multiple interpretations in the wiki page for each comic.
  
 
If you want to talk about a specific comic, use its discussion page.
 
If you want to talk about a specific comic, use its discussion page.
  
Please only submit material directly related to —and helping everyone better understand— xkcd... and of course ''only'' submit material that can legally be posted (and freely edited.Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked.
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Please only submit material directly related to xkcd and, of course, only submit material that can legally be posted and freely edited. Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked.
  
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[[Category:Root category]]
 
[[Category:Root category]]

Latest revision as of 19:52, 31 July 2025

Welcome to the explain xkcd wiki!
We have an explanation for all 3272 xkcd comics, and only 42 (1.3%) are incomplete. Help us finish them!

 Go to this explanation

Latest comic

Baryon Asymmetry
Wait, what do you mean, 'dark matter'? It's not dark, it interacts with high-energy gamma rays ... right? Oh jeez, did I forget to make it interact?
Title text: Wait, what do you mean, 'dark matter'? It's not dark, it interacts with high-energy gamma rays ... right? Oh jeez, did I forget to make it interact?

Explanation

Cueball wants to know why the universe has baryon asymmetry. The observable universe contains much more matter than antimatter. Current physical theories imply that matter and antimatter should have been created in roughly equal amounts. The fact that antimatter is rare is very fortunate for humans and other objects made of matter, given that matter/antimatter reactions destroy both substances with a violent release of energy.

The creator of the universe, far from being wise and all-knowing, simply forgot to add a roughly equal amount of antimatter. They add the antimatter that they originally forgot, only to create a massive explosion as large quantities of the universe experience annihilation.

The title text resolves another physics mystery in a similarly unexpected way. Dark matter mysteriously interacts with gravitation, but not electromagnetic energy. The creator explains that dark matter was supposed to interact with high-energy gamma rays, but they forgot to add that property to dark matter. The Wikipedia articles for antimatter and dark matter start with clarifications that antimatter and dark matter are not the same thing, and that dark matter is different from dark energy.

The creator of the universe in this comic might be the same floating sphere featured in 3085: About 20 Pounds. Talking to a floating sphere is becoming a returning subject in xkcd.

Transcript

[Cueball is floating in a void. He is speaking with the creator of the universe, who appears as a black sun symbol.]
Cueball: So you're the creator of the universe?
Creator of the Universe: That's me! So, got any questions?

[Cueball is putting his hand to his face.]
Cueball: Oh man, so many. What's the reason for baryon asymmetry? Why is most of the universe matter and not antimatter?

[Cueball's hand is back down.]
Creator of the Universe: Crap. Did I forget the antimatter? One sec, let me just…

[Many explosions fill the panel, including a large explosion in the centre.]
BOOM



      new topic.png  View comic discussion

New here?

Last 7 days (Top 10)

Lots of people contribute to make this wiki a success. Many of the recent contributors above have just joined. You can do it too! Create your account here.

You can read a brief introduction about this wiki at explain xkcd. Feel free to create an account and contribute to the wiki! We need explanations for xkcd comics, characters, What If? articles, and everything in between. If it is referenced in an xkcd comic, it should be here.

  • The incomplete explanations are listed here. Feel free to help out by expanding them!

Rules

Don't be a jerk!

There are a lot of comics that don't have set-in-stone explanations; feel free to put multiple interpretations in the wiki page for each comic.

If you want to talk about a specific comic, use its discussion page.

Please only submit material directly related to xkcd and, of course, only submit material that can legally be posted and freely edited. Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked.

If you need assistance from an admin, post a message to the Admin requests board.