JWs has been saying Bible is authored by God because Job
26:7 says: “Earth is being hanged upon nothing.” And this verse in combination
with Isaiah 40:22 which says “God resides above the circle of earth” implies that
earth is spherical and remains unsupported from above or from beneath. Thus,
Bible contains the knowledge which science confirmed later.
However, recent understanding of science is that the whole visible part of the universe is only 4%, and the visible exists because of the invisible 96%-- “dark matter 26%” and “dark energy 70%”--which is a fifth and previously unknown type of fundamental force called quintessence, which fills the universe like a fluid serving as a support to the visible universe.
https://www.nationalgeographic.com/science/space/dark-matter/
http://www.dailymail.co.uk/sciencetech/article-4760730/Huge-map-cosmos-reveals-dark-matter.html
It would then mean that Job 26:7 cannot be used the way JWs do. Job was simply implying that earth was not touching the sky, not as a truth revealed even before the scientists could know.