Not only fire, but the forms of flame, are worshipped and all that belongs to it.

Entire nature is called Aditi, whose children are named Adityas.

M.
Maury quotes these words from Gotama: "Aditi is heaven; Aditi is air; Aditi is mother, father, and son; Aditi is all the gods and the five races; Aditi is whatever is born and will be born; in short, the heavens and the earth, the heavens being the father and the earth the mother of all things." This reminds one of the Greek Zeus-pateer and Gee-meteer.
Varuna is the vault of heaven.

Mitra is often associated with Varuna in the Vedic hymns.

Mitra is the sun, illuminating the day, while Varuna was the sun with an obscure face going back in the darkness from west to east to take his luminous disk again.