4
$\begingroup$

Does the cosmic microwave background radiation have a red shift parameter z? If so what is the value for z?

$\endgroup$
9
$\begingroup$

The cosmic microwave background has a redshift of about $1100$, see here for instance.

Keep in mind that the "surface of last scattering" that gives rise to the CMB in fact existed everywhere in space, it's just that the photons currently reaching us have $z\sim1100$.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.