University of California Scientist came up with an unusual hypothesis suggesting that extraterrestrial beings have long settled on Earth and lived among us as observers.

There is yet no evidence of this but then, according to ancient sources, including the Bible, our planet has been visited by the representative of the extraterrestrial beings.

Scientist of University of California in year 2000, held a press conference which led by Professor Jonathan Malkisom, at the time which the sensational news that representative of the extraterrestrial civilizations have long been among humans was reported. They adopted human appearance and closely monitor our move. There have been aliens on Earth from the beginning of creation, says Adrian Kent of the Perimeter Institute for Theoretical Physics in Canada.

https://www.youtube.com/watch?v=yjNmDFI9ZlE