Broadcasted radio signals emitted from Earth would indeed become lost among cosmic general background radio noise very quickly.Chuck Keranen said:The signals we've emitted...
How much degradation would occur as the signal ripples in all directions away from us...wouldn't the amount reaching a single destination be miniscule?
Agreed. Sending us a focused beam might only make sense if "They" thought we could make sense of it, or they are here already communicating, which would probably require more than one signal...not likely.rootone said:Broadcasted radio signals emitted from Earth would indeed become lost among cosmic general background radio noise very quickly.
I doubt that using our best technology presently available we could even detect a radio broadcast occurring on a hypothetical planet orbiting the Alpha Centuri system, our nearest stellar neighborhood.
An intentionally focused transmission would work a lot better if someone decided to do that.