>>23893262I already astral travel outside my body and into space where I can observe all the planets from a gods eye view and in all of those sessions I've perceived great globes of mass whizzing through the black depths of space at high velocity. The universe is made of balls of stuff and gravity is a byproduct of that massed stuff bending the fabric of spacetime giving it curvature and spin forces.
The only flatspace that can exist is in the virtual. Maybe if you were trapped in some matrix then the world would be a plane, because most game engines don't render planets at scale. They render finite chunks of worldspace with inaccessible edges.