Author(s)

Naser Mostaghel

Civil Engineering Department, University of Toledo, Toledo, USA.

We show that, when measuring the Hubble constant by starting the evaluation from the time of the big bang era, the effect of time dilation results in a decrease in the value of the Hubble constant. But when evaluating the Hubble constant by starting the evaluation from the present time, the effect of time dilation results in an increase in the value of the Hubble constant. To elucidate the process, the time dilation is calculated both directly and through Schwarzschild solution of the Einstein equation for the gravitational time dilation. It is concluded that both measured values are valid but because of time dilation, different starting times for the evaluation of the Hubble constant have resulted in different measured values for the Hubble constant.

Hubble Constant, Time Dilation, Redshift, Time Symmetry, Gravitation

Mostaghel, N. (2018) Effects of Time Dilation on the Measurements of the Hubble Constant. International Journal of Astronomy and Astrophysics, 8, 339-346. doi: 10.4236/ijaa.2018.84024.