A direct one-way speed of light test for an ether in space

The concept of a luminiferous, meaning light bearing, ether has been a persistent idea throughout time. Einstein delivered an address in 1920 and revealed some relevant and prescient thoughts. The Special Theory of Relativity is based on two postulates. The second has come to be interpreted that the speed of light is always C in every inertial reference frame. This second postulate is one that was never been based on any empirical evidence. The general acceptance of this assumption has been perpetuated by the difficulty in measuring the one-way speed of light. Many experiments have been proposed to measure the constancy of the one-way speed of light but, so far, all have failed. What is significantly important is that there is now no experimental evidence to fully substantiate Einstein’s second postulate by which the one-way speed of light is constant in all inertial reference frames. If there is an ether, the postulate may prove to be invalid. It might be assumed that the null result of the Michelson Morley Experiment has already determined the nonexistence of any ether, but that would be wrong. There is a need for an experiment to determine whether relative motion is always the key to known kinematic phenomena. The purpose of this paper is to suggest a new way to make one-way speed of light tests and to confirm or reject the assumed relativistic idea that all inertial reference frames are equal.