Of the Sun and Moon...

Fingolfin, seeing that he was forsaken in Araman, led his host by perilous paths into the far north of Arda, and he took the desperate counsel of traversing the Helcaraxë by foot, which none had yet dared, save the Valar only, and Ungoliant. Many perished in that crossing, and the Noldor were hard put to it, but at last they reached the Outer Lands, for they were a mighty people.

Meanwhile, the Valar, hearing the tale of their heralds of the rebel Noldor, were filled with sorrow; but when at last Fëanor set foot again upon the Outer Lands, they began those counsels for the redressing of the evil of Morgoth. And Manwë bade Yavanna and Nienor to put forth all their powers of growth and healing upon the Two Trees, but they availed not to recall life to them. But, even as hope failed, there appeared on a lifeless branch of Telperion a silver flower, and upon a branch of Laurelin a single fruit of gold, and these the Valar took, and Manwë blessed them. Aulë the Smith and his people wrought for them great vessels to preserve their radiance, and these vessels were filled by Varda, that they might become lamps of Heaven, and the Valar resolved to succour the wayward Noldor in Middle-earth with light, to confound the malice of Morgoth, but also the Valar were aware of the coming of Men long foretold.

Isil was made ready first, and the Moon arose first in the West, guided by the Maia Tilion, even as Fingolfin set foot again upon the Outer Lands and blew his trumpet. Then the Grey Elves of Beleriand were delighted, for the world had Moonlight; and the slaves of Morgoth too were amazed. Then, when Isil had traversed the heavens seven times, Anar the fire-golden arose flaming in the West, guided by Arien, and the clouds of Middle-earth were kindled, and there was heard the sound of many waterfalls; and there then awoke many things that had waited long in the Sleep of Yavanna. Then Morgoth was indeed dismayed, and he descended into the deepest dungeons of Angband, recalling his slaves, and sending forth great reek and fumes from Thangorodrim to conceal his realm. And he assailed Tilion, sending shadow-phantoms against him, and there was strife in the paths of the Sunset, but Tilion was victorious and the phantoms were sent back quaking to Morgoth. But the Sun Morgoth feared with a great fear, and dared not assail her, having indeed no longer the power.

But seeing the assault upon the Moon, the Valar were afraid, fearing what the evil of Morgoth might yet accomplish against them. And remembering the ruin of Almaren in the collapse of the great Lamps, the Valar purposed that the like should not befall them in the West. And so they fortified their realm, and raised the mountains of the Pelóri to even greater heights; and they set about their realm the Enchanted Isles, that the Exiled Noldor might not find the way back to the West. And anyone who sailed those seas became lost, and developed a loathing of the sea, and if perchance he disembarked upon one of those isles, he laid down to sleep and awoke not until the Change of the World...