I think, it‘s better, if I just refer to this detailed study about this topic and let more knowledgeable people discuss it.
The Quran not being a science book is quite relevant. What ancient scholars did, and what we still do, is to observe how the universe works and try to link that with the verses in the Quran that mention these things.
They thought the Earth was stationary and the sun and moon orbited it. That was the best science of the day. This statement of yours is a ...
My understanding as a lay-person, is that the Quran can be understood in different ways, when it comes to these scientific sounding verses.
1400 years ago, no one would have understood it the way we do today. They were not "wrong" as long as they were not misusing the Arabic words.
Similarly, we may understand it differently, since our ...