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Re: Cosmological redshift



I forgot to finish what I wrote before.

Any photon which is emitted by a radiative process after decoupling
also shares in the space expansion. Thus a photon emitted early
(one with a large red shift) and received by us some considerable
time afterward will have its apparent wavelength increased by both
the doppler effect due to its recessional velocity and by the
expansion of the space itself. This latter part is what is referred
to as a cosmological red shift.

Leigh