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so they really aren't likely to have been 'broadcast' out
Originally posted by Gaderel
reply to post by impaired
Its an assumption but what is the alternative?
Radiation is prevalent throughout the universe in many forms, any advanced species should be familiar with it, and it is assumed would have harnessed it at some stage for communications.
Likewise electricity is a basic building block of technology and science.
what other forms of communication would you suggest?