[anoniuyiu33412]

Didn't read the whole thread just yet. but, to the point.

So, it's aliens. what would they possible be communicating?

What kind of information would actually matter to communicate over 500 million light years?

I bet it would be: a way to reply

I wouldn't bother to try to send intructions for them - us - to build another 500 million light-year capable transmitter,

But maybe, just maybe, they could be sending information for making us able to build a wormhole.

A we'd know where the other extreme would be located, so we "just" need to build one and point it to them.

[tpmx]

Time to watch Contact (1997) for the 5th time.