Quote:
|
The Universe's matter and charged particles are very thinly spread indeed on average. One of the major conundrums in cosmology is where the slight gravitational anomalies came from to form the first stars and then galaxies. Quantum fluctuations just after the BB anyone?
|
It's due to variations in the energy density of the plasma caused by temperature differences in the early Universe up to the period of recombination.
This is been measured as E-mode polarization in the CMB.
Regions of higher energy density (=lower temperature) can result in the formation of matter. It's one of the reasons why the CMB is anisotropic.
It's ironical our PC friends reject this despite the role that plasma plays in the formation of matter in the early history of the Universe.
Regards
Steven