Norse Mythology (R. B. Anderson).

To support the heavenly vault, the gods stationed the strong dwarfs, Nordri, Sudri, Austri, Westri, at its four corners, bidding them sustain it upon their shoulders, and from them the four points of the compass received their present names of North, South, East, and West. To give light to the world thus created, the gods studded the heavenly vault with sparks secured from Muspells-heim, points of light which shone steadily through the gloom like brilliant stars. The most vivid of these sparks, however, were reserved for the manufacture of the sun and moon, which were placed in beautiful golden chariots.

“And from the flaming world, where Muspel reigns,

Thou sent’st and fetched’st fire, and madest lights:

Sun, moon, and stars, which thou hast hung in heaven,

Dividing clear the paths of night and day.”

Balder Dead (Matthew Arnold).

When all these preparations had been finished, and the steeds Arvakr (the early waker) and Alsvin (the rapid goer) were harnessed to the sun-chariot, the gods, fearing lest the animals should suffer from their proximity to the ardent sphere, placed under their withers great skins filled with air or with some refrigerant substance. They also fashioned the shield Svalin (the cooler), and placed it in front of the car to shelter them from the sun’s direct rays, which would else have burned them and the earth to a cinder. The moon-car was, similarly, provided with a fleet steed called Alsvider (the all-swift); but no shield was required to protect him from the mild rays of the moon.

Mani and Sol

The chariots were ready, the steeds harnessed and impatient to begin what was to be their daily round, but who should guide them along the right road? The gods looked about them, and their attention was attracted to the two beautiful offspring of the giant Mundilfari. He was very proud of his children, and had named them after the newly created orbs, Mani (the moon) and Sol (the sun). Sol, the Sun-maid, was the spouse of Glaur (glow), who was probably one of Surtr’s sons.