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.
Life Began in Zero-G
Mainstream Science has Failed
We (that's me and the Holy spirit) used the same evidence that mainstream science (SciPop) uses but got a different result, so SciPop isn't repeatable. Therefore, according to the scientific method, SciPop isn't scientific.