God is awesome, all mighty, all powerful and able to do, create etc far far more than we can ever imagine.
His creation , the world, planet, universe, solar system, milky way etc etc is enormous. Yet you have reduced his creation to a flat earth that is covered over by a dome which no one, or rocket, can get through. Your view of creation is limited - therefore your view of God is limited.
Go and look at the night sky through a telescope; I dare you. Forget all about globe earth, men landing on the moon, the moon being made of plasma etc etc - just go and look at the vastness of space. Read a magazine, like the BBC Sky at night; learn about planets, milky ways, stars, the sun etc. And then say "my Father made all that from nothing". The Psalmist said "the heavens declare the glory of God", and he only saw what he could see with his own eyes. God told Abraham to count the stars in the sky - if indeed they can be counted. That hints of a sky/solar system that is so big we can never know/see all of it.
Doesn't that fill you with a sense of awe, wonder and the sheer vastness, power and glory of God?
If not, there's nothing I can say to convince you - your God is too small.
When will you understand that some people have been into space, seen all this with their own eyes, walked on the moon and looked down at the earth - and then have become Christians? Neil Armstrong walked on the moon and it caused him to read a few verses from Genesis 1. He was giving glory to God by reading his word - watched by millions on television.
Doesn't all that tell you that, for many, studying space etc only leads them to realise that there really is a Creator, who is awesome?
If not, there's nothing I can say to convince you - your God is too small.
You think that planets, the milky way etc is evidence that God is being hidden?
On the contrary; they reveal more of God's power, glory and creativity than we can ever know or understand.
The only thing that is bigger than God's vast, beautiful, powerful, awesome universe is the love that he has for each one of us - even though we are but specks of dust on weighing scales.
I feel sorry for you if you can't see how awesome God's creation, and therefore God, is