tunstall birdman
Striker
It's not and they does exist, I can confirm this 100%.Who knows what is true. Absolutely everything about this whole alien/UFO stuff may well be 100% made up.
But think about this. Technology has only really started to get going in last 200 years and yet we can already now see which Sun's on the other side of the Universe have planet's in the goldilocks zone.
In addition civilizations have come and gone on our planet over thousands of years so on other planets it's quite conceivable that the first developed faster than we did for whatever reason.
The universe is 4.5 billion years old so even a civilization that developed only 1% faster than us, they've got a 45 million year head start on us! (or something big like that anyway)
It's really not that difficult to believe that someone, somewhere else in the Universe spotted earth was in a goldilocks zone a long long time ago.
Then there is the formula that covers how many possible life evolving planet's there could be based on the number of planets in visible universe.
Like I say at the start, it could all be complete tosh, but mathematically it's also very possible we have been visited many many times past and present.
I've spent my whole life hoping that I'll at least get to know the truth on UFOs in my lifetime