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Even if every solar system in our galaxy had inteligent life the prospect of travell seems remote ... unless they live to 1000 years which would change the opportunity one would think.
C travel would seem unatainable even fractions of c would be difficult...how much would it cost to fill the tank even at a cent a kilometer it would be an expensive trip one would think.
But then maybe they have licked the energy problem but it still does not mean they would come here...mmm unless they have heard our transmissions and are on the way to find out who is filling space with noise.
alex
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