Cosmic Microwave Background – National Radio Astronomy Observatory

How Big Was the Source of the Cosmic Microwave Background Radiation 13.7 Billion Years in the Past?

I believe that this question has been answered on the Physics Stack Exchange. 13.7 years in the past the…

Since the cosmic microwave background emits as a black body, we start with the spectral radiance of a black…

Question: If there was a 1,000,000 watt UHF television show broadcast into space, at what distance would it become…

Question(s): I have three related questions: The redshift of objects indicates that the farther away they are, the faster…

Question: I have read that the diameter of the universe is 96 billion light years. How can that be…

Question: The temperature of the CMB is about 3 Kelvin, but the 3 K here mean the brightness temperature…

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