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Results tagged with cosmic-microwave-background
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user 42435
Questions about is the electromagnetic radiation remnant from the early stage of the universe, also known as "relic radiation".
10
votes
1
answer
1k
views
Where's the matter that created the CMB?
I know that the CMB was created at the recombination, when photons could finally travel freely. But each of those photons was deflected one last time before this happened. Where's the matter that defl …
- 1,768
11
votes
1
answer
551
views
How did astronomers get rid of microwave radiation from stars and galaxies in picures of the...
Images of the CMB show no sign of stars or galaxies. If they did, shouldn't the Milky Way be a bright band dividing the CMB into hemispheres? Black body radiation in a given wavelength/frequency range …
- 1,768
3
votes
2
answers
356
views
Back when the CMB was predominantly in the visible spectrum, would it have been visible to t...
The CMB is a near-perfect black-body spectrum, and assuming this has been true since the de-coupling, we should have been able to see the glow. In fact, at a certain point, it should have been almost …
- 1,768