Aslan

Then the great giant raised a horn to his mouth. They could see this by the change of the black shape he made against the stars. After that—quite a bit later, because sound travels so slowly—they heard the sound of the horn: high and terrible, yet of a strange, deadly beauty.

Immediately the sky became full of shooting stars. Even one shooting star is a fine thing to see; but these were dozens, and then scores, and then hundreds, till it was like silver rain: and it went on and on. And when it had gone on for some while, one or two of them began to think that there was another dark shape against the sky as well as the giant's. It was in a different place, right overhead, up in the very roof of the sky as you might call it. "Perhaps it is a cloud," thought Edmund. At any rate, there were no stars there: just blackness. But all around, the downpour of stars went on. And then the starless patch began to grow, spreading further and further out from the centre of the sky. And presently a quarter of the whole sky was black, and then a half, and at last the rain of shooting stars was going on only low down near the horizon.

With a thrill of wonder (and there was some terror in it too) they all suddenly realized what was happening. The spreading blackness was not a cloud at all: it was simply emptiness. The black part of the sky was the part in which there were no stars left. All the stars were falling: Aslan had called them home.

Chapter 15: Night Falls on Narnia