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At about 9.6 billion light years, our intuition about angular diameter breaks down. Galaxies start getting larger the more distant they are. Let's find out why.

Nick Lucid Host/Writer/Editor/Animator
Natalie Wells Researcher
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VIDEO ANNOTATIONS/CARDS

The Speed of Light is Infinite... Kind Of:
   • The Speed of Light is Infinite... Kin...  

Most Galaxies are Moving Faster than Light!
   • Most Galaxies are Moving Faster than ...  
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OTHER SOURCES

https://people.ast.cam.ac.uk/~pettini...
https://doi.org/10.1139/cjp20190257
https://arxiv.org/abs/astroph/9905116
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LINKS TO COMMENTS

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IMAGE CREDITS

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TIME CODES

00:00 Cold Open
00:28 What is Angular Diameter?
01:56 Angular Diameter Turnaround
02:52 Finite Speed of Light
04:07 Time is a Major Factor
06:02 Space is Expanding
07:48 Cosmic Light Cone
08:21 Summary
09:09 Sponsor Message
10:07 Outro
10:26 Featured Comment