Einstein's space-time is a physical REALITY which occupies a volume, as if space-time had no physical volume there would be nothing between the stars that we see at night and they would all be touching each other leaving no dark space in between them as we see it. Yet up to this writing, science did not provide any physical entity that would embody the volume occupied by space-time. In gravimotion's interpretation of the Universe the entity space-time is determined by analogy to temperature.
Air is made of molecules in ceaseless MOTION (see previous page: temperature) which, even though interdependent, appear random. Sound waves (voice, music) are specific modifications of these random MOTIONS; no matter our human interpretations, these so called waves are truly physical as they do excite our ear-drums.
One is entitled to think that light waves, which are occurring as pure massless dynamic-MOTION-volumes, are then occurring within a background made of random movements at the image of the air molecules MOTIONS, and out of which the physical molecules disappeared.
Space-time is then considered here to be occurring under haphazardly oriented MOTIONS that are pure massless invisible dynamic-MOTION-volumes.
These MOTION-volumes are such that they can handle MOTION-volumes as fast as the MOTION-volumes implementing light rays as the latter transmit themselves through space-time.
As such space-time is occurring as absolute Motion volumes rather than relative Motion-volumes. Absolute and relative designations being well defined in science.
In gravimotion interpretation, in order to distinguish them from light waves, these dynamic-motion-volumes are labelled present mo(ve)ment.
Note that they nevertheless are represented with bars, like light rays, and not with ellipses, like the motion of material entities.
Because the present mo(ve)ment pure activity is invisible it's illustration is in blue color rather than black.
In gravimotion's interpretation of Nature, space-time occurs as random and invisible pure dynamic-MOTION-volumes called the present mo(ve)ment. The primordial ingredient of the present mo(ve)ment is un-organized MOTIONS moving in all directions that can handle MOTIONS as fast as light MOTION.
A characteristic of the present mo(ve)ment, not mentioned in physics, is it's short happening, yet self un-ending renewing. Besides being self driven, that is animated or live, the present mo(ve)ment is altogether finite and infinite.
In gravimotion interpretation of Nature space-time is occurring as invisible MOTION-volumes.
Next find out how gravity, in gravimotion interpretation of Nature, is a specific implementation of the present mo(ve)ment; click: Gravity.