Who was the Egyptian goddess of the sky?

Nut, also known by various other transcriptions, is the goddess of the sky in the Ennead of ancient Egyptian religion. She was seen as a star-covered nude woman arching over the earth, or as a cow.

Nut is a daughter of Shu and Tefnut. Her brother and husband is Geb. She had four or five children: Osiris, Set, Isis, Nephthys, and—in early Egyptian sources—Horus. She is considered one of the oldest deities among the Egyptian pantheon, with her origin being found on the creation story of Heliopolis. She was originally the goddess of the nighttime sky, but eventually became referred to as simply the sky goddess. Her headdress was the hieroglyphic of part of her name, a pot, which may also symbolize the uterus. Mostly depicted in nude human form, Nut was also sometimes depicted in the form of a cow whose great body formed the sky and heavens, a sycamore tree, or as a giant sow, suckling many piglets (representing the stars).