The CMBR and the Seeds of Galaxies
Wright, Edward L.
Original · EN
The Cosmic Microwave Background Radiation (CMBR) is the radiation left over from the hot Big Bang. Its blackbody spectrum and small anisotropy provide clues about the origin and early evolution of the Universe. In particular, the spectrum of the CMBR rules out many non-gravitational models of structure formation, and the anisotropy of the CMBR provides a measure of the gravitational potential at the time of last scattering, about 300,000 years after the Big Bang. The density inhomogeneities needed to produce the gravitational potential perturbations traced by the CMBR have grown to become the galaxies, clusters of galaxies, and superclusters that we see today.
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