I am finding your posts very confusing. You seem to be mixing up a lot of unrelated ideas.
The word "Ouranos" is a greek word which is translated in our Bibles as heavens. It is not a Hebrew word and does not follow the same Hebrew grammatical formations. It refers to the solid dome above the earth on which many in the ancient world believed that the stars moved on. The Greeks believed this was the sky god. It is not in any way referring to the planet Uranus but it is the Greek god that the planet was named after. It has nothing to do with Orion.
The Greeks, like the rest of the ancient world had no ideas the stars were light years away from the earth.
I know its Greek. I don't think you know the significance of the LXX yet. It was the chosen term by the LXX rabbis for 'shama.' The most prominent thing beyond our planets is the Orion constellation, and I will try to check the BDB lexicon soon to see if Orion is utterly dismissed in relation to 'ouranos.'
Btw, when 'ouranos' is used in 2P3, it means the outer universe, and 2, it is plural, in the same collective sense of our English 'heavens.' Why do that?
You are still assuming Genesis 1 is confined to 'ancient world beliefs.' Those came later, after the ordinary description of creation week, when the Adamic tribe knew that 'kavov' were not 'shama.' Or are you still of the mindset that if Gen 1-11 says someone said something, then it is obviously not what they said?
Using the text's own inter-related commentary, the next thing they knew about the purpose of stars was the massive tally which would represent Abraham's seed through Christ, Gen 15. The 'shama' were already a sign of some kind about this; it is not that clear, yet as soon as another child is born, after her sons are gone, Eve believes she has given birth to the redemptive Seed. And a period when 'men called upon the name of the Lord' before the utter evil of Gen 6.
Those pieces of information have much more to do with the purpose of the 'shama' than a dome that was believed in later.
The Greeks knew of great distances. Lewis cites Ptolemy in
Almagest I, 5, saying he knew we were in a very remote nook of a huge universe, just barely a mathematical point. You can find this in 'Science and Religion' in GOD IN THE DOCK. The last segment of the 'conversation' with a fellow professor is exactly what you are saying. I have manually copied the 'coin-drawer' illustration, and will see if I can paste it here.