>>7472724 (lb)

I've listed multiple sources that form a mostly complete picture and even forgot Bill Cooper. The earliest antigrav tech from the current civilization was channeled by Vril girls, where evil ET entities borrowed the humans tech in exchange for greater control and power. The negative ones always trade like this, paying off their investment with interest.

>extraterrestrials, i.e. demons

please never confuse the two, only flat earth people do that.