>>...if we sinchronize all power stations across the globe... Could we possibly >transmit this 50Hz signal out to space, maybe to be used as a radio-lighthouse, >or a UFO beacon of some sort?
>
>The Earth already radiates like a small star over most of the
>electromagnetic spectrum due to broadcasting, microwave, and radar use. If
>there are any aliens within 60 light-years or so (commercial broadcasting
>began about 60 years ago) they've already heard us. The next question is:
>"Why haven't they answered?". There are many possible answers, the most
>popular of which are:
>
>1) There's nobody there
>2) There's somebody there, but they're just not listening
>3) There's somebody there, they heard us, but they just don't care
>4) There's somebody there, they heard us, but they're paranoid
>5) There's somebody there, they heard us, and they're on their way to take
>over
>
>My guess is "None of the above". I go with the "It's a big Galaxy" theory.
>Consider, what Lee DuBridge, Presidential Science advisor, said: "Either
>Mankind is alone in the galaxy, or he is not: either prospect is
>mind-boggling".
Actually, there's one more you haven't mentioned.
6. There's somebody there, they heard us, and they're staying as far away
