[usefulcat]

No, I'm pretty sure we lost it well before that when we started spewing radio signals. Voyager is a minuscule speck travelling in a single direction at a snail's pace, while those radio signals are racing across enormous swaths of space at the speed of light.

[myth_buster]

How about nuclear tests and explosions? Would that be drawing curiosity?

[kenj0418]

I wouldn't think those would be noticeable unless you were already closely observing the earth.

I'm not a physicist, but I assume there isn't any detectable, unique signature of an explosion that can be detected from space. Stories I've read about test-ban treaties and non-proliferation efforts give the main mechanism for detecting tests are the seismic effects they have.

[Zikes]

What sort of signals do (human scale) nuclear explosions give off that are detectable from light-years away?