Stellar Radiation in Galaxies

FIGURE 4 The top figure shows the distribution of temperature fluctuations in the cosmic background radiation. The bottom figure shows the exact match between the spectrum of the cosmic background radiation and a blackbody spectrum. CORE, Cosmic Background Explorer DMR, differential microwave radiometer. 

Source.-Mather, J. C., and Boslough. J.. The Very First Light. Basic Books, New York, 1996. 

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