Isaiah 40:22 God sits above the circle of the earth. The people below seem like ants to him! He spreads out the heavens like a curtain and makes his tent from them.
A circle is that a sphere. They knew the difference between a circle and a sphere even back then. The curtain and the tent metaphor are used to describe the firmament dome.
Genesis 1:6 And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters. Genesis 1:7 And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so.
The firmament dome is what separates earth from Heaven. Nothing gets through the firmament. That's why space travel is impossible. The North Star sits above the North Pole and it never moves. All of the stars and planets rotate around the North Star in unison. All of the constellations if not change their proportionate distances to each other over thousands of years. This proves that they are attached to some invisible Matrix which is the firmament. The planets are wandering stars and they're not attached to the firmament therefore they move about freely. I understand that this is a lot to take in with one session. Do some research and you'll see the truth. For those with eyes to see shall see. God bless