Basically, if one assumes space is empty and there is no prime mover, or that an ether exists but is totally static and immobilized in its behavior, then one must assert some additional principle or metaphysical mechanism for all the observable motion in the universe, whether it be a metaphysical god, or a metaphysical creation-event such as the "Big Bang", or a mathematical-metaphysical abstraction, such as Einstein's relativity. If the ether exists, and is not static, then Nature simplifies things tremendously, but leaves human metaphysical belief systems even more isolated from reality.
http://www.orgonelab.org/MillerReich.htm
However, orgone is not comparable with the older concept of a static or stagnant and immobile ether, nor fully compatible even with Miller's passive Earth-entrained ether. However, it does appear to be compatible with - and this will be the thrust of this preliminary discussion - a dynamic ether, something which would also fulfill the role of being a cosmic prime mover.

James DeMeo