Ancient near eastern cosmology in the context of "Enūma Eliš"

The term cosmography has two distinct meanings: traditionally it has been the protoscience of mapping the general features of the cosmos, heaven and Earth; more recently, it has been used to describe the ongoing effort to determine the large-scale features of the observable universe.

Premodern views of cosmography can be traditionally divided into those following the tradition of ancient near eastern cosmology, dominant in the Ancient Near East and in early Greece.

In ancient near eastern cosmology, the firmament was a celestial barrier that separated the heavenly waters above from the Earth below. In biblical cosmology, the firmament (Hebrew: רָקִ֫יעַ‎ rāqīaʿ) was the vast solid dome created by God during the Genesis creation narrative to separate the primal sea into upper and lower portions so that the dry land could appear.

The concept was adopted into the subsequent Classical and Medieval models of heavenly spheres, but was dropped with advances in astronomy in the 16th and 17th centuries. Today the word is sometimes used as a synonym for the sky or for heaven.

The ancient Mesopotamian underworld (known in Sumerian as Kur, Irkalla, Kukku, Arali, or Kigal, and in Akkadian as Erṣetu), was the lowermost part of the ancient near eastern cosmos, roughly parallel to the region known as Tartarus from early Greek cosmology. It was described as a dark, dreary cavern located deep below the ground, where inhabitants were believed to continue "a transpositional version of life on earth". The only food or drink was dry dust, but family members of the deceased would pour sacred mineral libations from the earth for them to drink. In the Sumerian underworld, it was initially believed that there was no final judgement of the deceased and the dead were neither punished nor rewarded for their deeds in life.

The ruler of the underworld was the goddess Ereshkigal, who lived in the palace Ganzir, sometimes used as a name for the underworld itself. Her husband was either Gugalanna, the "canal-inspector of Anu", or, especially in later stories, Nergal, the god of war. After the Akkadian Period (c. 2334–2154 BC), Nergal sometimes took over the role as ruler of the underworld. The seven gates of the underworld are guarded by a gatekeeper, who is named Neti in Sumerian. The god Namtar acts as Ereshkigal's sukkal, or divine attendant. The dying god Dumuzid spends half the year in the underworld, while, during the other half, his place is taken by his sister, the scribal goddess Geshtinanna, who records the names of the deceased. The underworld was also the abode of various demons, including the hideous child-devourer Lamashtu, the fearsome wind demon and protector god Pazuzu, and galla, who dragged mortals to the underworld.

Abzû or Apsû (Sumerian: 𒀊𒍪 abzû; Akkadian: 𒀊𒍪 apsû), also called Engar (Cuneiform:𒇉, LAGAB×HAL; Sumerian: engar; Akkadian: engurru – lit. ab = 'water' zû = 'deep', recorded in Greek as Ἀπασών Apasṓn), is the name for fresh water from underground aquifers which was given a religious fertilising quality in ancient near eastern cosmology, including Sumerian and Akkadian mythology. It was believed that all lakes, springs, rivers, fountains, rain, and even the Flood, as described in Atrahasis, originated from the Abzû. In Mesopotamian cosmogony, it is referred to as the freshwater primordial ocean below and above the earth; indeed the Earth itself was regarded as a goddess Ninhursag that was conceived from the mating of male Abzu with female saltwater ocean Tiamat. Thus the divine Mother Earth – on her surface equipped with a bubble of breathable air – was surrounded by Abzû, and her interior harbours the realm of the dead (Irkalla).

Marduk (/ˈmɑːrdʊk/; cuneiform: 𒀭𒀫𒌓 AMAR.UTU; Sumerian: amar utu.k "calf of the sun; solar calf"; Hebrew: מְרֹדַךְ, Modern: Merōdaḵ, Tiberian: Mərōḏaḵ) is a god from ancient Mesopotamia and patron deity of Babylon who eventually rose to prominence in the 1st millennium BC. In Babylon, Marduk was worshipped in the temple Esagila. His symbol is the spade and he is associated with the Mušḫuššu.

By the 1st millennium BC, Marduk had become astrologically associated with the planet Jupiter. He was a prominent figure in Babylonian cosmology, especially in the Enūma Eliš creation myth.

Enlil, later known as Elil and Ellil, is an ancient Mesopotamian god associated with wind, air, earth, and storms. He is first attested as the chief deity of the Sumerian pantheon, but he was later worshipped by the Akkadians, Babylonians, Assyrians, and Hurrians. Enlil's primary center of worship was the Ekur temple in the city of Nippur, which was believed to have been built by Enlil himself and was regarded as the "mooring-rope" of heaven and earth. He is also sometimes referred to in Sumerian texts as Nunamnir. According to one Sumerian hymn, Enlil himself was so holy that not even the other gods could look upon him. Enlil rose to prominence during the twenty-fourth century BC with the rise of Nippur. His cult fell into decline after Nippur was sacked by the Elamites in 1230 BC and he was eventually supplanted as the chief god of the Mesopotamian pantheon by the Babylonian national god Marduk.

Enlil plays a vital role in the ancient near eastern cosmology; he separates An (heaven) from Ki (earth), thus making the world habitable for humans. In the Sumerian flood myth Eridu Genesis, Enlil rewards Ziusudra with immortality for having survived the flood and, in the Babylonian flood myth, Enlil is the cause of the flood himself, having sent the flood to exterminate the human race, who made too much noise and prevented him from sleeping; the cuneiform tablets of Atra-Hasis report on this connections in a comparatively well-preserved state. The myth of Enlil and Ninlil is about Enlil's serial seduction of the goddess Ninlil in various guises, resulting in the conception of the moon-god Nanna and the Underworld deities Nergal, Ninazu, and Enbilulu. Enlil was regarded as the inventor of the mattock and the patron of agriculture. Enlil also features prominently in several myths involving his son Ninurta, including Anzû and the Tablet of Destinies and Lugale.