How Far in Space Can Radio Broadcasts Reach?

Illustration for article titled How Far in Space Can Radio Broadcasts Reach?

Apparently our radio broadcasts can be listened to in a "space bubble" 200 light years in diameter. That's huge! But when you compare it to the rest of the Milky Way, um, not really. So just know when you're hoping an E.T. will find you through your radio broadcasts, he has to be within that bubble to hear you. God, we're so insignificant. [jacakadamblog via Geekosystem]



So what happens to our signals at that 200 light year mark? Do they just stop and decide they've gone far enough? Or is it simply that the signals have become to weak to differentiate from all the other cosmic shit that goes down in space?

this article needs to explain MOAR.