The Twelfth Planet

"The Twelfth Planet" is a book by author Zecharia Sitchin, published in 1976. It presents a controversial theory that ancient Sumerian texts describe extraterrestrial beings called the Anunnaki, who visited Earth from a hypothetical planet beyond Pluto, which he refers to as "Nibiru" or the Twelfth Planet. Sitchin suggests that these beings influenced early human civilization, technology, and culture. His interpretations of ancient myths and archaeological findings have sparked debate, but mainstream historians and scientists largely dismiss his conclusions due to a lack of supporting evidence. The book is part of Sitchin's broader series on ancient astronauts and civilizations.