In the Babylonian creation epic, the great god Marduk fights and kills a monstrous dragon. Having done so,
He divided the monstrous shape and created marvels (from it).
He sliced her in half like a fish for drying:
Half of her he put up to roof the sky,
Drew a bolt across and made a guard hold it….
As for the stars, he set up constellations corresponding to them.