ABSTRACT
The preponderance of redshifts from all directions in the sky gave credence to a new, alternative explanation—that these shifts were mostly due to a general recession of the nebulae away from Earth. This chapter seeks to uncover whether the different formulation in Equation —and therefore its interpretation—is really due to new physics, or whether it is merely a consequence of our choice of coordinates. The cosmological redshift in the Milne universe may be calculated either from the expansion factor, or directly from the more conventional approach used in other applications of general relativity that does not involve the assumption of an expanding space. The bottom line is that the interpretation of redshift as an expansion of space is dependent upon the coordinates we choose to calculate it. The chapter proves that the cosmological redshift is not due to a new type of time dilation, distinct from the more traditional, gravitational and kinematic ones.
