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linkedin post 2022-01-27 05:38:55

PHOTONS EXCEED BARYONS. “The present day photon number density is nγ,0 = 4.1×10(8) m(-3), which is roughly nine orders of magnitude greater than the present day baryon number density; the fact that there is a huge number of photons for every baryon has consequences for the thermal history of the Universe.”

https://lnkd.in/e6ifiQMn

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