Good grief, how old are you?
I believed it all once - "Chariots of the Gods", "The Ancient Astronauts" etc, paper precursors to the sort of junk science websites you seem to peruse.
But then I grew up.
You know, telling someone like Mr Brosz who researches and develops PROTOTYPE GROUND-TO-ORBIT SPACECRAFT for a living to attend a science class is a classic. What have YOU built lately that requires the comprehension of scientific principles and physical laws?
If YOU walked into any high school physics class or and presented your Half-baked Half-Earth Hypothesis, YOU would be the one leaving with the face. If those Super Supremo Sumerians were so clever, how come they're no longer around?