An exploration of passive artifact SETI and how an alien civilization might communicate on the cheap.
https://www.patreon.com/johnmichaelgodier
Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://chriszabriskie.com/cylinders/
Artist: http://chriszabriskie.com/
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