How do changes in light wavelengths support the big bang theory? a. lights from other galaxies shifts toward the red end of the spectrum, which shows that the galaxies are moving away from the earth. b. lights from other galaxies shifts toward the blue end of the spectrum, which shows that the galaxies are moving toward the earth. c. lights from other galaxies shifts toward the red end of the spectrum, which shows that the galaxies are moving towards earth. d. lights from other galaxies shifts toward the blue end of the spectrum, which shows that the galaxies are moving away from the earth.