For 10 points, often depicted standing over her brother and husband Geb, this is what sky goddess who swallows the sun each night?
This deity's aid and protection of the dead is seen both in Chapter 59 of the Book of the Dead, in which the dead are given air and water by this deity from her sacred sycamore tree, and in her frequent appearance painted on the inside of coffin lids. The cenotaph of Seti I describes how this deity became estranged from her consort, angry that this goddess was consuming their children, like "the sow that eats her piglets". In order to provide Ra with a place on-high for his palace, Nun transformed this goddess into her best known form, which features the four Sons of Horus holding up each of her legs; that myth about this goddess is related in "The Book of the Heavenly Cow". This goddess gave birth to two sets of twins, which like their parents and grandparents became couples, Nephthys, Set, Isis, and Osiris. For 10 points, often depicted standing over her brother and husband Geb, this is what sky goddess who swallows the sun each night?
This deity's aid and protection of the dead is seen both in Chapter 59 of the Book of the Dead, in which the dead are given air and water by this deity from her sacred sycamore tree, and in her frequent appearance painted on the inside of coffin lids.
Nut [prompt on "Rhea"]