See I always thought about aliens and shit, but think about it. All the galaxies started for form because of the big bang. Shit started to happen stars exploded to created different shit thats necessary to create life blah blah. millions of years later, space is still expanding and shit.
Well if you really think about it. The closest galaxy to us is Andromeda. It is 2.5 million light-years away. This means even traveling at the speed of light (which nothing with mass can do) itll STILL take 2.5 million years. Wormholes right now are not proven, and are just a theory we think. if you think about it that way. Even though I WANT to believe we will be visited and I WANT to believe we were in the past. It is still hard to believe that something is THAT technologically advanced