Originally Posted by Buris
well, 95 lightyears away means that the signal was sent.
take 2016-95, you get 1921.
The first signal we humans ever sent out could be Hitler from 1936.
So they already beat us by 15 years, but lets assume the first broadcast they would see is 1974, which was the first intentional broadcast into space, they now beat us by 63 years.
Well.... I'm reading into this in a way that's kinda different yet still along these lines.
Let me explain.
The signal from the source would indeed take 95 years just to get here to be noticed by us from that location, same applies with us had we sent a signal that could have been detected back in 1921 but we were already capable of broadcasting / sending out radio signals before that time.
Radio signals with morse code was around at least at the time of the sinking of the Titanic since they had a wireless transmitter and used it to call for help so the date a signal we could have sent a detectable signal that could be identified as being from an intellegent source goes back to at least 1912 but probrably further by a few years at least.
These signals although primitive by comparison to today's standards could still be recognized as something originating from an artificial / intellegent source. These signals also aren't restricted as to where they could go such as a directed signal, beam or whatever, radio signals as we know when broadcast in general will just spread out all over the place and signals from that time period would have been like that.
Even now we have such broadcasting taking place, obviously not limited to just a radio-type broadcast or signal. More modern signals sent with the intent of being limited / directed would be an exception of sorts but even these could possibly
be discovered, just not as easily by comparison.
Signals don't even have to be sent out specifically with the intent for someone / something to find, they are simply broadcast from the source and just go wherever since thats the nature of these signals. If you were out far enough with a receiver sensitive enough to pickup these signals you could watch an actual live broadcast of things from the time period they were sent: For example a TV series that went off the air long ago from our perspective but to the one watching it with said receiver it would be "New".
Same applies to any transmission that could have been sent from such a distant location provided the tech used is the same or similar to what ours is / was based on
. If there is someone out there it's possible our signals could have been noticed by now but any reply we could get would still be 95 years from the time it was discovered by them
, the same here if we noticed it and were to try and reply back to it.
For now this is under the assumption such responses would be of a similar tech so for now I'll go with that as I sum things up.
In short - Even if this is something coming from someone it's probrably gonna be like using the USPS to communicate with them.
Either it's gonna take a long time to even get a reply to them or it could just become lost. Edited by Kryton - 9/3/16 at 5:47am