Spatial dimensionality is a mapping device. Logically the two properties of space are infinity and equilibrium.
Equilibrium is the frame with the longest ruler and fastest clock.
What fills space is energy radiating out, toward infinity, as the structure it generates coalesces in, toward equilibrium. Therefore galaxies.
Energy drives the wave, while the fluctuations rise and fall. Creating the effect of time, as the energy, as present, goes past to future, while the patterns generated rise and fall, future to past.
Much as consciousness goes past to future, while thoughts go future to past.
There is no dimension of time, because the past is consumed by the present, to inform and drive it. Causality and conservation of energy. Cause becomes effect.
Time is an effect, like temperature, pressure, color and sound. Time is frequency, events are amplitude.
It is just that as mobile organisms, our experience is a sequence of perceptions, in order to navigate, so we experience the present moving past to future, rather than change turning future to past.
Sort of like seeing the heavens moving east to west, though it's the earth spinning west to east.
Epicycles were brilliant math, as well, but the crystalline spheres were lousy physics. Spacetime is our version of crystalline spheres.
The curvature is due to synchronization being centripetal, while harmonization is centrifugal. Nodes and networks, organisms and ecosystems, particles and fields.
The James Webb is going to stick a pin in Big Bang Theory, as it finds ever further galaxies in the cosmic background radiation.