Alpher and Herman were able to estimate the temperature of the cosmic microwave background to be 5 K, though two years later they re-estimated it at 28 K. This high estimate was due to a mis-estimate of the Hubble constant by Alfred Behr, which could not be replicated and was later abandoned for the earlier estimate.
To predstavlja zbirko peg v prostoru v katerih se je verjetno zgodil dogodek razklopitve, manj kot 400.000 let po prapoku, ter v času, da so fotoni s te razdalje ravno dosegli opazovalce.