The red shift in atomic spectra of distance cosmic objects is a source of evidence for the big bang theory.<ref name="hubble" /> The red shift, the expanded wavelength of light due to the Doppler Effect of faraway objects, suggests that these objects are moving away from earth. This is a phenomenon predicted by the Big Bang Theory. | The red shift in atomic spectra of distance cosmic objects is a source of evidence for the big bang theory.<ref name="hubble" /> The red shift, the expanded wavelength of light due to the Doppler Effect of faraway objects, suggests that these objects are moving away from earth. This is a phenomenon predicted by the Big Bang Theory. |