In authentic Sumerian religion, the Anunnaki were terrestrial deities of the underworld and sky. They were not astronauts. The planet "Nibiru" in the Enuma Elish is described as a celestial body associated with Marduk, but in an astronomical/astrological allegory, not a physical planet. Sitchin’s claim that Nibiru orbits Earth every 3,600 years has been refuted by Newtonian physics—such a planet would have been detected by IRAS or WISE, and its gravitational effects would have long ago destabilized the inner solar system.
Sitchin pointed to specific Sumerian and Akkadian texts as “proof”: hubo gigantes en la tierra zecharia sitchin pdf
Sitchin argues that the biblical "giants" or Nephilim were not mythical monsters but the —extraterrestrial beings from the planet Nibiru . According to his research: In authentic Sumerian religion