"According to ancient cosmology, there are seven levels: the sky, the clouds, the sky above the clouds, the firmament, the waters above the firmament, the heavens, and the heaven of heavens, where God dwells".

According to ancient cosmology, there are indeed seven levels, but this has nothing to do with the material universe, except that that is the lowest level. They are the seven levels of a hierarchical universe. Words like sky, clouds, waters have to be interpreted symbolically, not literally.