At this point in the creation the earth is the central object in the heaven for we read of no other object. The Spirit of God is there though, and He is moving on the face of the dark, unformed, and void earth. God said, "let there be light." and there was light. I think that the source of this light is God Himself for several reasons. First, God divided the light from the darkness just as later the sun divided the light from the darkness. Second, God will be the source of light in the new Jerusalem when they no longer need the sun. Third, the sun is a type of Christ in passages like Malachi 4. Forth, this source of light was all the earth's light throughout all the creation until just before things were created that could see, when it was replaced with the sun. John says, "No man hath seen God at any time." I think God replaced Himself with the sun right then so as not to be seen by any creature on earth. Also, fitting with this, something must have been moving for the morning and evening and God was moving so as He divided the light from the darkness there would be morning and evening. In accordance with this, the Bible speaks of the sun (our current light) rising, going down, and running a circuit.
On day two we read of God creating the firmament to divide the waters from the waters. Anyone I've talked to just assumes that the earth is near the center of this firmament. I think that one should show that it is otherwise if he is to make a good case against this assumption. But, what's the point if the firmament is our atmosphere? The next place we read of the firmament is on day four when God made the sun, moon, and stars and put them in firmament! If the firmament is where the stars are, then the birds are still inside the firmament just as it says on day five. Am I saying that there is water outside outer space and earth is at the center? Yes! If this is true, then the universe is finite rather than infinite as some have suggested; and there is a center, it is not acentric as many now postulate.