4,000 to 6,000 years ago, the oldest civilization, the Sumerians, left detailed written accounts of how these off-world beings they called “Anunnaki” came down from the heavens to live among them as overlords. Sumerian written records include much advanced knowledge, such as the correct number of, and location of, all planets in our solar system, which they could not have seen without sophisticated telescopes. The Sumerians claim this information was given to them by their multiple “gods,” the Anunnaki, which is one of many strong supports for the truth of their account.
These same documents claim that domesticated plants and animals were created by the Annunaki, and that even humans are the product of genetic engineering and hybridization between the Anunnaki and the native upright walking primates of Earth. This statement also seems to be corroborated by the fact that humans have fewer chromosomes than the higher primates from which we are supposedly descended.