Uploaded February 2019 | Updated September 2026, 56 minutes ago

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In this video I talk about how many extraterrestrial civilizations might exist in our galaxy.
A 2020 study estimates a similar number I estimated in 2019: 36 civilizations iopscience.iop.org/article/10.3847/1538-4357/ab8225
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CORRECTION 2:07 - Fi