Quote:
Originally Posted by Jadukor
Another very interesting concept and perhaps a sign of an advanced civilization is the Dyson Sphere.
Freeman Dyson argued that as a civilization makes advancement in science it is likely to build mega-structure around it's Sun to harness all the solar energy and this would have an odd dimming effect when observed through telescope and other sources.
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There is a SETI lecture on youtube discussing this very thing. I watched it a few months back, will try to find it and post it here.