The cause of the aberration of stellar light propagated to the surface of the earth was believed as the result of the light velocity superposition, and the red shift was the result of the space change in the past physics. It can be derived from the conclusion of the article “Metric in Reference System Transformation” that the aberration and red shift of the stellar light Propagated to the surface of the earth are the result of the wave length change of the star moving relative to the earth instead of the result of either the light velocity change or the space change. Therefore，it is inappropriate to explain the aberration with velocity superposition theory or to invoke the red shift to prove the Big Bang Theory.
Keywords: stellar aberration; stellar red shift; relative motion
