Mehet-Weret (mḥ.t-wr.t) is a goddess of the sky in Ancient Egyptian religion. Her name means "Great Flood".
She was mentioned in the Pyramid Texts. In Ancient Egyptian creation myths, she gives birth to the sun at the beginning of time, and in art she is portrayed as a cow with a sun disk between her horns. She is associated with the goddesses Neith, Hathor, and Isis, all of whom have similar characteristics, and like them she could be called the "Eye of Ra".
Mehet-Weret is primarily known as being the “Celestial Cow” or “Cow Goddess” because of her physical characteristics, but she contributes to the world in more ways than that. She is also the Goddess of Water, Creation, and Rebirth; in Egyptian mythology, Mehet-Weret is one of the main components in the making and survival of life.
Mehet-Weret was responsible for raising the sun into the sky every day. Not only did this goddess produce the light for the crops of those who worshipped her, she was also what caused the annual Nile River flood that fertilized each of the crops with her plentiful water. In Patricia Monaghan's The Encyclopedia of Goddesses and Heroines, she describes Mehet-Weret as the Goddess of Creation because she gives birth to the sun every day, creating life for all those who worship her.
In Egyptian mythology, Mehet-Weret was known as the Goddess of Water and Creation, but Geraldine Pinch also introduces the idea that she was a piece of the nighttime sky. She is referenced as being the river of stars known as the Milky Way, because of her physical traits of being the responsible for the annual flood of the Nile River.
Mehet-Weret is described as being the mother of Ra, the ancient Egyptian solar deity. As the Goddess of Creation, she gives birth to the sun every day and is the reason the world isn’t in the dark. In her physical description, she is described as having a sun disk between her horns; in typical motherly fashion, she protects her son Ra and keeps him close to her.