The Bible refers to three different heavens.

The third heaven is that glorious place surrounding the immediate presence of God, to which Paul was carried in a transcendent vision early in his Christian experience (2 Corinthians. 12:1-4).

The Second heaven seems to be equivalent to what we call "outer space".

While the first heaven consists of the atmospheric blanket surrounding the earth, in which clouds move and birds fly.

In the first chapter of Genesis, a distinction may be seen between the first heaven, above which the waters were lifted (vv. 8, 20) and the second heaven in which the luminaries were placed (vv 14-17).

There is certainly nothing crude or "pre-scientific," in the bad sense of that expression, about the cosmology of Genesis, as many able expositors have successfully and repeatedly demonstrated.