The Lorentz factor is an inseparable mathematical outcome of the so called aberration phenomenon. This article will show that the aberration phenomenon, an illusion, potentially appears in all observations in which an observer has movement in relation to the light source that he examines.
Detailed analysis on the true nature of aberration ends up giving us confidence on the existence of ether. Without ether, no aberration of anything is possible. Unfortunately, the conventional explanation of this illusion has been misled even long before the debut of relativity, but relativity, with its miss in calculation, just "legitimizes" the misleading, which then in turn gives relativity physical "evidence" galvanizing the "indisputable" look of relativity.
The conventional explanation about stellar aberration relies heavily on one equation, which is tan(beta) = v/c, where v is the orbital speed of the earth and c is the speed of light. Simple trigonometry mandates that this equation requires the existence of a right triangle that has a hypotenuse of value of sqrt(c^2+v^2) > c . During the observation of stellar aberration, on the inertial frame attached to the corresponding telescopes, it is exactly along such a hypotenuse that the light leading to the discovery of the apparent position of the star is found. As such, an observer directly facing the oncoming light traveling inside the telescope cylinder must determine whether the light hitting his eye is traveling at speed c or sqrt(c^2+v^2) . If the observer has doubt, he can just simply asks himself what if this light is the only light that he ever sees in the world during the time he finds this star. No known reason can support him if he chooses to claim that the light he sees is traveling at speed sqrt(c^2+v^2).
A more thorough study on stellar aberration helps us to prove that time as one physical element is absolute; time advancement has nothing to do with any clock movement. The Ives-Stilwell experiment, thought to have helped confirming the nonexistence of ether, turns out to be solid evidence confirming the existence of ether.
With the invalidity of relativity displayed in the articles Relativity Is Self-Defeated (1 of 3) and (2 of 3) by this author, all the upcoming consideration in this article has no need to make separate argument to exclude the interference from relativity.