xkcd #3263: Baryon Asymmetry

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?

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Source: https://xkcd.com/3263/

explainxkcd for #3263

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?
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[–] 6 points 2 months ago (2 children)

In before the antimatter question and the dark matter question are answered by the same mechanism, analogised by antimatter somehow having cloaking technology to avoid annihilation.

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