Scholar Michael S. Heiser asserts that Zecharia Sitchin’s "12th Planet" theory relies on fundamental misinterpretations of ancient Akkadian and Sumerian texts, notably misidentifying common Mesopotamian celestial symbols on Cylinder Seal VA 243. Heiser argues that "Nibiru" refers to a point of transition, not a planet, and that the Anunnaki are Sumerian deities, not extraterrestrials. For a detailed analysis, visit Dr. Michael Heiser's site .