Dyaus-Pitr is the Aryan Sky Father, his consort is Privthi, the Earth Mother and primordial feminine, an aspect of Shakti because the pure energy forms matter after being impregnated by the pure consciousness, the Sky Father. Consciousness is as boundless as the skies and heavens, it is not limited and is within all beings.
The sun is his all-seeing eye. The rain falling from the sky was seen as a microcosmic version of the Sky-Father impregnating the Earth Mother to give way to all of creation and the life Privthi produced with the rain symbolized her nurturing aspect. They're both one in Brahman, the Lord, and their child is all of creation of which they are intertwined.