1940s?

waaay off. try 2800 BC!
this is David Ickes theory;
- several thosand years ago a large mass arrived in our solar system with cataclysmic effects. It smashed into one of the larger planets (jupiter? cant remember) creating a large asteroid belt (which i believe is well documented) The remnant settled into solar orbit as the mass we now know as venus.
- suring this cataclysm, mars was in the wrong place at the wrong time & was smashed beyond recognition. All traces of civilized life were eliminated EXCEPT the pyramids in the region of cydonia. (just google it, youll see what i mean) The Earth sufferred some fallout too, which took the effect of giant flooding (goodbye Atlantis!)
- The martians came to earth to survive, they settled in the caucasus (hence the term 'caucasian') mountains to escape the giant flooding occurring everywhere (as mentioned in the old testament - Noahs ark etc). These Martians were the original caucasian or 'aryan' race.
Other points he makes include the Nazca lines in Peru and the fact that if you put a white person into sensory deprivation their bodily rhythm matches the orbit of mars, rather than the orbit of earth (as with non-white people). Also there is a famous mystical site in England called Avebury with neolithic monuments, and the landscape is almost a mirror image of cydonia.
Crucially, many ancient religious texts also start to make sense if you take his theory on board. He says if you read hebrew the old testament and other writings mention 'Gods' as plural rather than singular.
He is best known for his ideas about the mysterious 'annunaki' from ancient Sumerian texts. He believes they were reptilian creatures with greatly advanced knoledge.
This sounds like something L. Ron Hubbard would come up with.