How to listen to our world from 10,000 light years away? If you were 10,000 light years away from all radio stations and digital broadcasts from our world, what equipment would be necessary to detect and capture some information like a voice or a photo? If we found a similar planet in the galaxy, what could we do to listen to their radios?
As the above commentator says, our technology isn't sufficiently sensitive to pick up everyday radio broadcasts from so far away, and even if we could it wouldn't be worth sending them a message. The earliest we could hope to receive a reply would be in 20,000 years time, by which time there might be no humans left on Earth to receive it, as a result of nuclear war or some other catastrophe. If this extra-terrestrial civilisation were much, much nearer, tens of light years rathe than thousands, prospects would be very much better, but it is extremely unlikely that an advanced alien civilisation is as close as that.