Don Stockbauer
unread,Feb 19, 2020, 9:15:10 AM2/19/20You do not have permission to delete messages in this group
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KIII civilizations have been looked for , should be a lot of waste heat , a whole galaxy, none seen.
How they could be so efficient to not radiate in the infrared is a problem no one knows.
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A single civilization does not colonize a whole galaxy , many thousands or millions of civilizations arise throughout our galaxy just like our civilization arose on our planet. The civilizations develop radio communication and link up with one another to form a galactic network. Each civilization gets energy from their own sun and since they're intelligent they don't need that much energy especially for communication which does not need much energy at all. Thus no waste heat.
Just like the solution to the Fermi paradox , intelligent civilizations communicate, not travel.