There is no concrete/solid proof as of yet.
historians thought that there were way too many pyramids to all be built by egyptians, so... they thought that the egyptians had help. and by help i mean aliens
By Aliens.
No, the Egyptians from Egypt did
Aliens!
The ancient Egyptians... or aliens maybe
Mesopotamians lived before the Egyptians in the Iraq area of today were in contact with aliens called the Anunaki and invented writing, Egyptians lived in present day Egypt and may or may not have been in contact with aliens , they invented paper
Ancient Egyptians (humans) built the pyramids. Those who say otherwise demean the intelligence, ingenuity, and abilities of people and the Egyptians.
The aliens helped the Egyptians build it.
They happily watched their husbands working on the pyramids and thought to themselves, "Dang fools should just wait for the aliens to come help."
the Egyptians did but there are theory's of them worshiping aliens that came before
They were the first civilization to make contact with aliens
I hate to be blunt, but the whole idea that Egyptians needed help from an advanced alien society, in order to stack rocks, comes from some wacko books from the Seventies, written by a racist who saw nothing unusual in white people being able to stack rocks without alien help (name one cathedral which any sane person thinks had to be built by aliens) but could not believe black and brown people could do so.