And Pioneer.

A plaque, with (naked) humans on it (because aliens might not wear/understand wearing clothing as a matter of habit), directions as to how to get here via a diagram that Sagan et al figured anyone with visual abilities should be able to decipher, and a golden record with Earth sounds and human greetings in dozens of languages. Can't remember what was on which, but yeah, I think they were all armed with info on Earth. This was all huge and no secret back when the things launched, actually. Hell, I think Sagan mentions it in the original Cosmos.

There was also a message sent out 30 or more years ago by Arecibo at some distant star that basically said "hi", but, as it didn't repeat, it'd probably just wind up being another species' Wow! signal.

This isn't the first time we've broadcasted our position. Not to mention anyone nearby might have been able to pick up radio and television signals well enough to figure out that there's information in those waves.

And Pioneer.

A plaque, with (naked) humans on it (because aliens might not wear/understand wearing clothing as a matter of habit), directions as to how to get here via a diagram that Sagan et al figured anyone with visual abilities should be able to decipher, and a golden record with Earth sounds and human greetings in dozens of languages. Can't remember what was on which, but yeah, I think they were all armed with info on Earth. This was all huge and no secret back when the things launched, actually. Hell, I think Sagan mentions it in the original Cosmos.

There was also a message sent out 30 or more years ago at some distant star that basically said "hi", but, as it didn't repeat, it'd probably just wind up being another species' Wow! signal.

This isn't the first time we've broadcasted our position. Not to mention anyone nearby might have been able to pick up radio and television signals well enough to figure out that there's information in those waves.