4.8 • 739 Ratings
🗓️ 5 March 2020
⏱️ 26 minutes
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0:00.0 | Hello, SFIA audio listeners, in this month's Nebula exclusive, Big Alien Theory, |
0:05.0 | we're asking the reason alien civilizations might be rare is because most aliens are huge. |
0:10.6 | To hear it and every episode early and add free, plus hours of bonus content, check |
0:15.3 | out Go.nebler.tv slash Isaac Arthur and use my code, Isaac Arthur. |
0:20.6 | This video is sponsored by CuriosityStream. |
0:23.3 | Get access to my streaming video service, Nebula, when you sign up for CuriosityStream |
0:28.1 | using the link in the description. |
0:30.9 | We often wonder why we can't see any aliens, and it might be that they are out there and |
0:36.1 | can see us, but make it so we can't |
0:38.8 | see them. That Earth is essentially a zoo. Of course if we are in a zoo, it does make one |
0:44.8 | wonder what their equivalent of peanuts would be. |
0:52.3 | The Fermi paradox is the big question of where all the aliens are, when we don't seem |
1:00.1 | to hear from them but the universe seems to be a huge and ancient place. |
1:04.4 | In our galaxy alone there are many billions of stars, likely possessing a planet of around |
1:08.8 | Earth's mass, orbiting at a distance where |
1:11.0 | liquid water might be on the surface, and which are as old as our own sun, or order. |
1:16.5 | And of course we have many billions of galaxies. |
1:19.4 | It just doesn't seem probable that we could be it, either the only advanced civilization |
1:23.8 | out there or the first on the galactic stage. |
1:27.2 | Last fall we continued our discussion of the various hurdles or filters that might make |
1:31.3 | advanced civilizations less probable than we tend to assume in our great filter series, but |
1:37.0 | I thought we'd spend a bit of time this spring looking at some of the Fermi paradox solutions |
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