It does make it impossible because those sections in the OT are inconsistent and stupid besides making God evil. So unless you believe that an all-powerful God can also be stupid, there is no need to take the OT as the truth.how doest that make it impossible? It makes it impossible to think God is a good entity, maybe... but still doesn't contradict its existence based on the bible.
---
In the bible, God is depicted as the God of everything.
What makes you believe there is a separate God for the solar system?
As I said the NT is written by many authors (not by God as you want to assume). I do take the words of Jesus in NT as the truth, but you don't have to. Jesus never said that the Father that he talks about, is the only God there is. That the solar system has higher God than the Father is just for your information/consideration - you don't need to believe it.