What else do you know about extraterrestrials in general? Some of them at least.
We are the ninth (9th) civilization on this planet
8 have already destroyed each other in the past. Last two were the ones with dinosaurs (GMO lizards) and Atlantis (as depicted in the Bible before the Great Flood)
>just a belief that they have always been with us
That I agree with. ETs of all kinds have always been around.
I agree. Life in higher dimensions is something totally different from this.