There are three things in Genesis 1:2, besides the the deep, which describe the state of the universe before God said "let light be." We (that's me and the Holy spirit) use this to deduce that it was a zero-G environment.
By the end of the first day light was trapped in a watery mass teeming with biological life. It was the primordial soup that popular science (SciPop) predicts was the cradle of life. It was a zero-gravity environment.
David and Goliath, and the role of gravity in the story, illustrate the fact that we’ve destroyed the theoretical foundation of mainstream science (SciPop).
There are three things that we use to deduce that gravity as created on the 2nd day, which means that the during first day, and the time before it, there was no gravity in the universe.