Dyeus in the context of "Earth goddess"

Proto-Indo-European mythology is the body of myths and deities associated with the Proto-Indo-Europeans, speakers of the hypothesized Proto-Indo-European language. Although the mythological motifs are not directly attested – since Proto-Indo-European speakers lived in preliterate societies – scholars of comparative mythology have reconstructed details from inherited similarities in mythological concepts found in Indo-European languages, based on the assumption that parts of the Proto-Indo-Europeans' original belief systems survived in the daughter traditions.

The Proto-Indo-European pantheon includes a number of securely reconstructed deities, since they are both cognates—linguistic siblings from a common origin—and associated with similar attributes and body of myths: such as *Dyḗws Ph₂tḗr, the daylight-sky god; his consort *Dʰéǵʰōm, the earth mother; his daughter *H₂éwsōs, the dawn goddess; his sons the Divine Twins; and *Seh₂ul and *Meh₁not, a solar deity and moon deity, respectively. Some deities, like the weather god *Perkʷunos or the herding-god *Péh₂usōn, are only attested in a limited number of traditions—Western (i.e. European) and Graeco-Aryan, respectively—and could therefore represent late additions that did not spread throughout the various Indo-European dialects.

*Dʰéǵʰōm (Proto-Indo-European: *dʰéǵʰōm or *dʰǵʰōm; lit. 'earth'), or *Pl̥th₂éwih₂ (PIE: *pl̥th₂éwih₂, lit. the 'Broad One'), is the reconstructed name of the Earth-goddess in the Proto-Indo-European mythology.

The Mother Earth (*Dʰéǵʰōm Méh₂tēr) is generally portrayed as the vast (*pl̥th₂éwih₂) and dark (*dʰengwo-) abode of mortals, the one who bears all things and creatures. She is often paired with Dyēus, the daylight sky and seat of the never-dying and heavenly gods, in a relationship of contrast and union, since the fructifying rains of Dyēus might bring nourishment and prosperity to local communities through formulaic invocations. *Dʰéǵʰōm is thus commonly associated in Indo-European traditions with fertility, growth, and death, and is conceived as the origin and final dwelling of human beings.

A mother goddess is a major goddess characterized as a mother or progenitor, either as an embodiment of motherhood and fertility or fulfilling the cosmological role of a creator- and/or destroyer-figure, typically associated the Earth, sky, and/or the life-giving bounties thereof in a maternal relation with humanity or other gods. When equated in this lattermost function with the earth or the natural world, such goddesses are sometimes referred to as the Mother Earth or Earth Mother, deity in various animistic or pantheistic religions. The earth goddess is archetypally the wife or feminine counterpart of the Sky Father or Father Heaven, particularly in theologies derived from the Proto-Indo-European sphere (i.e. from Dheghom and Dyeus). In some polytheistic cultures, such as the Ancient Egyptian religion which narrates the cosmic egg myth, the sky is instead seen as the Heavenly Mother or Sky Mother as in Nut and Hathor, and the earth god is regarded as the male, paternal, and terrestrial partner, as in Osiris or Geb who hatched out of the maternal cosmic egg.

In comparative mythology, sky father is a term for a recurring concept in polytheistic religions of a sky god who is addressed as a "father", often the father of a pantheon and is often either a reigning or former King of the Gods. The concept of "sky father" may also be taken to include Sun gods with similar characteristics, such as Ra. The concept is complementary to an "earth mother".

"Sky Father" is a direct translation of the Vedic Dyaus Pita, etymologically descended from the same Proto-Indo-European deity name as the Greek Zeûs Pater and Roman Jupiter, all of which are reflexes of the same Proto-Indo-European deity's name, *Dyēus Ph₂tḗr. While there are numerous parallels adduced from outside of Indo-European mythology, there are exceptions (e.g. In Egyptian mythology, Nut is the sky mother and Geb is the earth father).