One can ask from where all the tales of bibles and Quran come from and why they found that acceptance among people.
The source of all books is tablets called Enuma Elish is a Babylonian creation mythos, at that time it's like General relativity book that explain the world, it was accepted by all people at that time.
the Earth was thought to be a flat disk floating on water. The flat-disk Earth was seen as one big supercontinent surrounded by a superocean, of which the known seas—what today is called the Mediterranean Sea, the Persian Gulf, and the Red Sea—were inlets. The Earth, the sea around it and the air (or sky) above it were thought to be inside a huge hemisphere, and this hemisphere was thought to be surrounded by water. The dome of this hemisphere (the firmament) was thought of as a solid upside-down bowl (made of tin according to the Sumerians, and iron according to the Egyptians) with the stars embedded in it. The fresh-water sea beneath the Earth was the source of all fresh-water springs, rivers and wells.
In both the Enûma Eliš and Genesis, a god creates this hemisphere (or upside-down bowl) in the midst of the water. In Genesis 1:6 Elohim says "Let there be a vault between the waters to separate water from water" and goes on to create dry land within it. In the Enûma Eliš, Marduk cuts Tiamat in two to make the heavens above and Earth below.
For full comparison :
With this Cosmography creating stars is not big deal and it took part of a day to do it's small dots of lights in the sky. But water is big deal everywhere you go you find water. and the Spirit of God was hovering over the waters.
The radius of observable universe about 45.7 billion light years and There are probably more than 170 billion galaxies in the observable universe and some galaxies of one hundred trillion stars.
All these are just light dots in the sky!!!