So in the beginning, in the title of the story, God created the heavens and the earth, but He didn't create the heavens yet, only the earth.
So, God works with Rabbi Cassuto.
Come on now bro, your just falling further from being sensible.
silly, it is a broad title of all that transpired, without exact details. Since you are not familiar (Cassuto is not the only reasonably bright person to mention this), here are some of the others:
5:1
6:9
10:1
There is usually a title, some pre-existing conditions, new action and a summary.
I often refer to ch 24 about pre-existing conditions because Rebekkah was not just being talked about that day, was not just beautiful that day, was not a virgin just that day. This is very common.
If you have no time for literary detail then stop reading.
Another example of style is the relegated phrase. In the genealogies, the important son is detailed, then 'he had other sons...' .
Defining creation:
the details of our system are not like the scattered massive universe, and the text is aware of this. There is a play on words in ch 15 where Abraham should read (what the local moving stars are saying about Christ the Seed) but then tally the stars. It makes perfect sense. The dusty cloud would have been 'astronomical' while the 'reading' was a proposition, not a math problem.
The distant universe is later said by Psalms, Job, Isaiah, to have been spread out or stretched. This is not the fine tuned verb of placing as found in early Genesis. So yes, God places earth and shama, but the distant worlds are another kind of event, and already there by Gen 1. They are lifeless; there is no evolution happening.