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Space is not quiet at all and is actually very noisy when listening via a radio telescope. There are many sources of radio emissions in the universe, with pulsars being a very common one. They can be quite interesting to listen when the signals are converted into sound frequencies we can hear. They range from slow clicks every few seconds to high pitched ...


No, except in the sense that national broadcasting and so on is regulated. Our location can be fixed, as you suggest, from simply looking at where the signals come from. Perhaps, though, you mean is it sent out "regularly" (i.e., at specified intervals). In truth we have been sending very powerful signals continuously into space since the dawn of the ...

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