Describe the observational evidence that suppor... - SS1 Physics Space Physics and Astronomy Question

Observational evidence supporting Hubble's Law and the expanding universe comes from the redshift of distant galaxies. When light from a galaxy is observed, its wavelength appears stretched, shifting towards longer wavelengths. This redshift indicates that the galaxy is moving away from us. Moreover, the degree of redshift is directly proportional to the galaxy's distance, as stated by Hubble's Law. This consistent relationship between redshift and distance provides strong empirical evidence for the expanding universe and validates Hubble's Law.