The Ether

Is the concept that dates back to the Ancient Greeks. They described it as the region that fills the universe above the terrestrial sphere.  The "Ether" penetrates everything and it is non-material. The Ether is the 5th element above the four primal elements of Air, Water, Earth and Fire. 

Furthermore, the Ether is paramount to the other 4 material elements and unlike the other four elements, the Ether is non- material while pervading the other 4.  The Ether is recognized by both physics and metaphysics and is referred to by Newton and Einstein.