Ether was invoked the structure of space was necessary for fields to propagate, e.g. light was a vibration of space. This is no longer necessary. And could not

Ether was invoked the structure of space was necessary for fields to propagate, e.g. light was a vibration of space. This is no longer necessary. And could not be detected in the M-M experiment. The Ionian Greeks proposed most of same models of space as modern physics, but lacked experiments to select the correct model. Some model propes emptiness and others an underlying substance of matter or energy.