alt Hacker NewsEarth's "radio bubble" is well over 100 light years across now. If there are aliens out there, they are probably already on their way to ask us in person why Ross, the largest Friend, doesn't simply eat the others.
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krapp • yesterday at 7:33 PM
Radio signals do weaken and dissipate over time and space. Broadcast signals could fade into the cosmic microwave background in a few light years depending on their strength. The sci-fi trope of aliens picking up Earth tv and radio just isn't plausible.
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After the transition to digital TV our broadcasted signals mostly look like noise, though. Maybe an outside observer would assume that our civilization ended sometime in 2010.