relying mostly on fresh interpretations of clay tablets and cylinder seals from mesopotamia , especially the so-called creation story of the babylonians , the enuma elishwhich he considers to be a description of the astronomical events which created our present solar systemsitchin has constructed a complete narrative history which traces the story of the annunaki ; their origins on the planet nibiru ; their sojourn to earth ; their family relationships , rivalries , loves , and , eventually their departure .