Someone help me out here; but I think it was the movie hangar 18 that was supposed to be based on a true storry about some astronauts that launched a satellite that collided with a U.F.O. They showed in the movie that they were extremely similar to ourselves, and that there race has been here before and will soon return again? I also heard once that they might have settled on the dark side of the moon and are waiting for the right moment to make globalcontact. I have also heard I don't remember were but some people believe that we are a kind of fallback for another race that we were sculpted after as a back up species for there disposal if any thing threatened there kind. Like a massive war or a legacy if they were to leave the galaxy, or just died out. Who knows.
Also I'm not looking for rude comments I'm just looking for a little insight to these question's that have bothered me since I was very young.