Yes.
Above is whatever is over your head.
Below is whatever is beneath your feet.
You become the point of reference when there is no other body to be connected with that sucks you into its bubble of relativity.
On earth, “above” and “below” are defined by earth and its gravity. Then by our orientation.
In a space ship, you have references of “floor” and “ceiling”.
If just you are floating in space, you become the reference or may pick a reference, but there would be no difference in sensation or any meaningful discernment of some concrete “above” or “below” without first picking a center.
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