Why do we see a gravitational redshift in the spectrum of the Sun?
A)Gravity makes light heavy,causing it to appear redder.
B)Because of gravity,the Sun is always moving away from us,so we see a redshift.
C)Time runs slower on the Sun than on Earth,making lines in the solar spectrum have lower frequency and hence longer wavelength than normal.
D)Spacetime curvature allows red photons of light to escape the Sun more easily than blue photons,leading to an apparent redshift.

Question

Quizplus · Accepted Answer

Gravitational redshift occurs because of the general relativistic effect where time runs slower in stronger gravitational fields. On the Sun, the gravitational field is much stronger than on Earth, causing the emission lines in the solar spectrum to appear at lower frequencies (or longer wavelengths) than they would if observed in a weaker gravitational field. This effect is a direct consequence of the time dilation predicted by Einstein's theory of general relativity.

Why Do We See a Gravitational Redshift in the Spectrum